3 * The simulator system class is the super class of all other classes. This
4 * class handles saving of games etc.
6 * @author Roland Haeder <webmaster@ship-simu.org>
8 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2012 Core Developer Team
9 * @license GNU GPL 3.0 or any newer version
10 * @link http://www.ship-simu.org
12 * This program is free software: you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation, either version 3 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 class BaseFrameworkSystem extends stdClass implements FrameworkInterface {
29 private $realClass = 'BaseFrameworkSystem';
32 * Instance of a request class
34 private $requestInstance = NULL;
37 * Instance of a response class
39 private $responseInstance = NULL;
42 * Search criteria instance
44 private $searchInstance = NULL;
47 * Update criteria instance
49 private $updateInstance = NULL;
52 * The file I/O instance for the template loader
54 private $fileIoInstance = NULL;
59 private $resolverInstance = NULL;
62 * Template engine instance
64 private $templateInstance = NULL;
67 * Database result instance
69 private $resultInstance = NULL;
72 * Instance for user class
74 private $userInstance = NULL;
77 * A controller instance
79 private $controllerInstance = NULL;
84 private $rngInstance = NULL;
87 * Instance of a crypto helper
89 private $cryptoInstance = NULL;
92 * Instance of an Iterator class
94 private $iteratorInstance = NULL;
97 * Instance of the list
99 private $listInstance = NULL;
104 private $menuInstance = NULL;
107 * Instance of the image
109 private $imageInstance = NULL;
112 * Instance of the stacker
114 private $stackerInstance = NULL;
117 * A Compressor instance
119 private $compressorInstance = NULL;
122 * A Parseable instance
124 private $parserInstance = NULL;
127 * A ProtocolHandler instance
129 private $protocolInstance = NULL;
132 * A database wrapper instance
134 private $databaseInstance = NULL;
137 * A helper instance for the form
139 private $helperInstance = NULL;
142 * An instance of a Sourceable class
144 private $sourceInstance = NULL;
147 * An instance of a InputStreamable class
149 private $inputStreamInstance = NULL;
152 * An instance of a OutputStreamable class
154 private $outputStreamInstance = NULL;
157 * Networkable handler instance
159 private $handlerInstance = NULL;
162 * Visitor handler instance
164 private $visitorInstance = NULL;
167 * An instance of a database wrapper class
169 private $wrapperInstance = NULL;
172 * Thousands separator
174 private $thousands = '.'; // German
179 private $decimals = ','; // German
184 private $socketResource = false;
189 private $packageData = array();
191 /***********************
192 * Exception codes.... *
193 ***********************/
195 // @todo Try to clean these constants up
196 const EXCEPTION_IS_NULL_POINTER = 0x001;
197 const EXCEPTION_IS_NO_OBJECT = 0x002;
198 const EXCEPTION_IS_NO_ARRAY = 0x003;
199 const EXCEPTION_MISSING_METHOD = 0x004;
200 const EXCEPTION_CLASSES_NOT_MATCHING = 0x005;
201 const EXCEPTION_INDEX_OUT_OF_BOUNDS = 0x006;
202 const EXCEPTION_DIMENSION_ARRAY_INVALID = 0x007;
203 const EXCEPTION_ITEM_NOT_TRADEABLE = 0x008;
204 const EXCEPTION_ITEM_NOT_IN_PRICE_LIST = 0x009;
205 const EXCEPTION_GENDER_IS_WRONG = 0x00a;
206 const EXCEPTION_BIRTH_DATE_IS_INVALID = 0x00b;
207 const EXCEPTION_EMPTY_STRUCTURES_ARRAY = 0x00c;
208 const EXCEPTION_HAS_ALREADY_PERSONELL_LIST = 0x00d;
209 const EXCEPTION_NOT_ENOUGTH_UNEMPLOYEES = 0x00e;
210 const EXCEPTION_TOTAL_PRICE_NOT_CALCULATED = 0x00f;
211 const EXCEPTION_HARBOR_HAS_NO_SHIPYARDS = 0x010;
212 const EXCEPTION_CONTRACT_PARTNER_INVALID = 0x011;
213 const EXCEPTION_CONTRACT_PARTNER_MISMATCH = 0x012;
214 const EXCEPTION_CONTRACT_ALREADY_SIGNED = 0x013;
215 const EXCEPTION_UNEXPECTED_EMPTY_STRING = 0x014;
216 const EXCEPTION_PATH_NOT_FOUND = 0x015;
217 const EXCEPTION_INVALID_PATH_NAME = 0x016;
218 const EXCEPTION_READ_PROTECED_PATH = 0x017;
219 const EXCEPTION_WRITE_PROTECED_PATH = 0x018;
220 const EXCEPTION_DIR_POINTER_INVALID = 0x019;
221 const EXCEPTION_FILE_POINTER_INVALID = 0x01a;
222 const EXCEPTION_INVALID_RESOURCE = 0x01b;
223 const EXCEPTION_UNEXPECTED_OBJECT = 0x01c;
224 const EXCEPTION_LIMIT_ELEMENT_IS_UNSUPPORTED = 0x01d;
225 const EXCEPTION_GETTER_IS_MISSING = 0x01e;
226 const EXCEPTION_ARRAY_EXPECTED = 0x01f;
227 const EXCEPTION_ARRAY_HAS_INVALID_COUNT = 0x020;
228 const EXCEPTION_ID_IS_INVALID_FORMAT = 0x021;
229 const EXCEPTION_MD5_CHECKSUMS_MISMATCH = 0x022;
230 const EXCEPTION_UNEXPECTED_STRING_SIZE = 0x023;
231 const EXCEPTION_SIMULATOR_ID_INVALID = 0x024;
232 const EXCEPTION_MISMATCHING_COMPRESSORS = 0x025;
233 const EXCEPTION_CONTAINER_ITEM_IS_NULL = 0x026;
234 const EXCEPTION_ITEM_IS_NO_ARRAY = 0x027;
235 const EXCEPTION_CONTAINER_MAYBE_DAMAGED = 0x028;
236 const EXCEPTION_INVALID_STRING = 0x029;
237 const EXCEPTION_VARIABLE_NOT_SET = 0x02a;
238 const EXCEPTION_ATTRIBUTES_ARE_MISSING = 0x02b;
239 const EXCEPTION_ARRAY_ELEMENTS_MISSING = 0x02c;
240 const EXCEPTION_TEMPLATE_ENGINE_UNSUPPORTED = 0x02d;
241 const EXCEPTION_UNSPPORTED_OPERATION = 0x02e;
242 const EXCEPTION_MISSING_ELEMENT = 0x030;
243 const EXCEPTION_HEADERS_ALREADY_SENT = 0x031;
244 const EXCEPTION_DEFAULT_CONTROLLER_GONE = 0x032;
245 const EXCEPTION_CLASS_NOT_FOUND = 0x033;
246 const EXCEPTION_REQUIRED_INTERFACE_MISSING = 0x034;
247 const EXCEPTION_FATAL_ERROR = 0x035;
248 const EXCEPTION_FILE_NOT_FOUND = 0x036;
249 const EXCEPTION_ASSERTION_FAILED = 0x037;
250 const EXCEPTION_FILE_CANNOT_BE_READ = 0x038;
251 const EXCEPTION_DATABASE_UPDATED_NOT_ALLOWED = 0x039;
252 const EXCEPTION_FILTER_CHAIN_INTERCEPTED = 0x040;
255 * Hexadecimal->Decimal translation array
257 private static $hexdec = array(
277 * Decimal->hexadecimal translation array
279 private static $dechex = array(
299 * Startup time in miliseconds
301 private static $startupTime = 0;
304 * Protected super constructor
306 * @param $className Name of the class
309 protected function __construct ($className) {
311 $this->setRealClass($className);
313 // Set configuration instance if no registry ...
314 if (!$this instanceof Register) {
315 // ... because registries doesn't need to be configured
316 $this->setConfigInstance(FrameworkConfiguration::getSelfInstance());
319 // Is the startup time set? (0 cannot be true anymore)
320 if (self::$startupTime == 0) {
322 self::$startupTime = microtime(true);
327 * Destructor for all classes
331 public function __destruct () {
332 // Flush any updated entries to the database
333 $this->flushPendingUpdates();
335 // Is this object already destroyed?
336 if ($this->__toString() != 'DestructedObject') {
337 // Destroy all informations about this class but keep some text about it alive
338 $this->setRealClass('DestructedObject');
339 } elseif ((defined('DEBUG_DESTRUCTOR')) && (is_object($this->getDebugInstance()))) {
340 // Already destructed object
341 self::createDebugInstance(__CLASS__)->debugOutput(sprintf("[%s:] The object <span class=\"object_name\">%s</span> is already destroyed.",
349 * The __call() method where all non-implemented methods end up
351 * @param $methodName Name of the missing method
352 * @args $args Arguments passed to the method
355 public final function __call ($methodName, $args) {
356 return self::__callStatic($methodName, $args);
360 * The __callStatic() method where all non-implemented static methods end up
362 * @param $methodName Name of the missing method
363 * @args $args Arguments passed to the method
366 public static final function __callStatic ($methodName, $args) {
367 // Implode all given arguments
371 $argsString = 'NULL';
372 } elseif (is_array($args)) {
373 // Some arguments are there
374 foreach ($args as $arg) {
375 // Add the value itself if not array. This prevents 'array to string conversion' message
376 if (is_array($arg)) {
377 $argsString .= 'Array';
382 // Add data about the argument
383 $argsString .= ' (' . gettype($arg);
385 if (is_string($arg)) {
386 // Add length for strings
387 $argsString .= ', ' . strlen($arg);
388 } elseif (is_array($arg)) {
389 // .. or size if array
390 $argsString .= ', ' . count($arg);
391 } elseif ($arg === true) {
392 // ... is boolean 'true'
393 $argsString .= ', true';
394 } elseif ($arg === false) {
395 // ... is boolean 'true'
396 $argsString .= ', false';
400 $argsString .= '), ';
404 if (substr($argsString, -2, 1) == ',') {
405 $argsString = substr($argsString, 0, -2);
408 // Invalid arguments!
409 $argsString = '!INVALID:' . gettype($args) . '!';
412 // Output stub message
413 // @TODO __CLASS__ does always return BaseFrameworkSystem but not the extending (=child) class
414 self::createDebugInstance(__CLASS__)->debugOutput(sprintf("[unknown::%s:] Stub! Args: %s",
424 * Getter for $realClass
426 * @return $realClass The name of the real class (not BaseFrameworkSystem)
428 public function __toString () {
429 return $this->realClass;
433 * Magic function to catch setting of missing but set class fields/attributes
435 * @param $name Name of the field/attribute
436 * @param $value Value to store
439 public final function __set ($name, $value) {
440 $this->debugBackTrace(sprintf("Tried to set a missing field. name=%s, value[%s]=%s",
448 * Magic function to catch getting of missing fields/attributes
450 * @param $name Name of the field/attribute
453 public final function __get ($name) {
454 $this->debugBackTrace(sprintf("Tried to get a missing field. name=%s",
460 * Magic function to catch unsetting of missing fields/attributes
462 * @param $name Name of the field/attribute
465 public final function __unset ($name) {
466 $this->debugBackTrace(sprintf("Tried to unset a missing field. name=%s",
472 * Setter for the real class name
474 * @param $realClass Class name (string)
477 public final function setRealClass ($realClass) {
479 $this->realClass = (string) $realClass;
483 * Setter for database result instance
485 * @param $resultInstance An instance of a database result class
487 * @todo SearchableResult and UpdateableResult shall have a super interface to use here
489 protected final function setResultInstance (SearchableResult $resultInstance) {
490 $this->resultInstance = $resultInstance;
494 * Getter for database result instance
496 * @return $resultInstance An instance of a database result class
498 public final function getResultInstance () {
499 return $this->resultInstance;
503 * Setter for template engine instances
505 * @param $templateInstance An instance of a template engine class
508 protected final function setTemplateInstance (CompileableTemplate $templateInstance) {
509 $this->templateInstance = $templateInstance;
513 * Getter for template engine instances
515 * @return $templateInstance An instance of a template engine class
517 protected final function getTemplateInstance () {
518 return $this->templateInstance;
522 * Setter for search instance
524 * @param $searchInstance Searchable criteria instance
527 public final function setSearchInstance (LocalSearchCriteria $searchInstance) {
528 $this->searchInstance = $searchInstance;
532 * Getter for search instance
534 * @return $searchInstance Searchable criteria instance
536 public final function getSearchInstance () {
537 return $this->searchInstance;
541 * Setter for update instance
543 * @param $updateInstance Searchable criteria instance
546 public final function setUpdateInstance (LocalUpdateCriteria $updateInstance) {
547 $this->updateInstance = $updateInstance;
551 * Getter for update instance
553 * @return $updateInstance Updateable criteria instance
555 public final function getUpdateInstance () {
556 return $this->updateInstance;
560 * Setter for resolver instance
562 * @param $resolverInstance Instance of a command resolver class
565 public final function setResolverInstance (Resolver $resolverInstance) {
566 $this->resolverInstance = $resolverInstance;
570 * Getter for resolver instance
572 * @return $resolverInstance Instance of a command resolver class
574 public final function getResolverInstance () {
575 return $this->resolverInstance;
579 * Setter for language instance
581 * @param $configInstance The configuration instance which shall
582 * be FrameworkConfiguration
585 public final function setConfigInstance (FrameworkConfiguration $configInstance) {
586 Registry::getRegistry()->addInstance('config', $configInstance);
590 * Getter for configuration instance
592 * @return $configInstance Configuration instance
594 public final function getConfigInstance () {
595 $configInstance = Registry::getRegistry()->getInstance('config');
596 return $configInstance;
600 * Setter for debug instance
602 * @param $debugInstance The instance for debug output class
605 public final function setDebugInstance (DebugMiddleware $debugInstance) {
606 Registry::getRegistry()->addInstance('debug', $debugInstance);
610 * Getter for debug instance
612 * @return $debugInstance Instance to class DebugConsoleOutput or DebugWebOutput
614 public final function getDebugInstance () {
615 // Get debug instance
616 $debugInstance = Registry::getRegistry()->getInstance('debug');
619 return $debugInstance;
623 * Setter for web output instance
625 * @param $webInstance The instance for web output class
628 public final function setWebOutputInstance (OutputStreamer $webInstance) {
629 Registry::getRegistry()->addInstance('web_output', $webInstance);
633 * Getter for web output instance
635 * @return $webOutputInstance - Instance to class WebOutput
637 public final function getWebOutputInstance () {
638 $webOutputInstance = Registry::getRegistry()->getInstance('web_output');
639 return $webOutputInstance;
643 * Setter for database instance
645 * @param $databaseInstance The instance for the database connection (forced DatabaseConnection)
648 public final function setDatabaseInstance (DatabaseConnection $databaseInstance) {
649 Registry::getRegistry()->addInstance('db_instance', $databaseInstance);
653 * Getter for database layer
655 * @return $databaseInstance The database layer instance
657 public final function getDatabaseInstance () {
659 $databaseInstance = Registry::getRegistry()->getInstance('db_instance');
662 return $databaseInstance;
666 * Setter for compressor channel
668 * @param $compressorInstance An instance of CompressorChannel
671 public final function setCompressorChannel (CompressorChannel $compressorInstance) {
672 Registry::getRegistry()->addInstance('compressor', $compressorInstance);
676 * Getter for compressor channel
678 * @return $compressorInstance The compressor channel
680 public final function getCompressorChannel () {
681 $compressorInstance = Registry::getRegistry()->getInstance('compressor');
682 return $compressorInstance;
686 * Protected getter for a manageable application helper class
688 * @return $applicationInstance An instance of a manageable application helper class
690 protected final function getApplicationInstance () {
691 $applicationInstance = Registry::getRegistry()->getInstance('application');
692 return $applicationInstance;
696 * Setter for a manageable application helper class
698 * @param $applicationInstance An instance of a manageable application helper class
701 public final function setApplicationInstance (ManageableApplication $applicationInstance) {
702 Registry::getRegistry()->addInstance('application', $applicationInstance);
706 * Setter for request instance
708 * @param $requestInstance An instance of a Requestable class
711 public final function setRequestInstance (Requestable $requestInstance) {
712 $this->requestInstance = $requestInstance;
716 * Getter for request instance
718 * @return $requestInstance An instance of a Requestable class
720 public final function getRequestInstance () {
721 return $this->requestInstance;
725 * Setter for response instance
727 * @param $responseInstance An instance of a Responseable class
730 public final function setResponseInstance (Responseable $responseInstance) {
731 $this->responseInstance = $responseInstance;
735 * Getter for response instance
737 * @return $responseInstance An instance of a Responseable class
739 public final function getResponseInstance () {
740 return $this->responseInstance;
744 * Private getter for language instance
746 * @return $langInstance An instance to the language sub-system
748 protected final function getLanguageInstance () {
749 $langInstance = Registry::getRegistry()->getInstance('language');
750 return $langInstance;
754 * Setter for language instance
756 * @param $langInstance An instance to the language sub-system
758 * @see LanguageSystem
760 public final function setLanguageInstance (ManageableLanguage $langInstance) {
761 Registry::getRegistry()->addInstance('language', $langInstance);
765 * Private getter for file IO instance
767 * @return $fileIoInstance An instance to the file I/O sub-system
769 protected final function getFileIoInstance () {
770 return $this->fileIoInstance;
774 * Setter for file I/O instance
776 * @param $fileIoInstance An instance to the file I/O sub-system
779 public final function setFileIoInstance (FileIoHandler $fileIoInstance) {
780 $this->fileIoInstance = $fileIoInstance;
784 * Protected setter for user instance
786 * @param $userInstance An instance of a user class
789 protected final function setUserInstance (ManageableAccount $userInstance) {
790 $this->userInstance = $userInstance;
794 * Getter for user instance
796 * @return $userInstance An instance of a user class
798 public final function getUserInstance () {
799 return $this->userInstance;
803 * Setter for controller instance (this surely breaks a bit the MVC patterm)
805 * @param $controllerInstance An instance of the controller
808 public final function setControllerInstance (Controller $controllerInstance) {
809 $this->controllerInstance = $controllerInstance;
813 * Getter for controller instance (this surely breaks a bit the MVC patterm)
815 * @return $controllerInstance An instance of the controller
817 public final function getControllerInstance () {
818 return $this->controllerInstance;
822 * Setter for RNG instance
824 * @param $rngInstance An instance of a random number generator (RNG)
827 protected final function setRngInstance (RandomNumberGenerator $rngInstance) {
828 $this->rngInstance = $rngInstance;
832 * Getter for RNG instance
834 * @return $rngInstance An instance of a random number generator (RNG)
836 public final function getRngInstance () {
837 return $this->rngInstance;
841 * Setter for Cryptable instance
843 * @param $cryptoInstance An instance of a Cryptable class
846 protected final function setCryptoInstance (Cryptable $cryptoInstance) {
847 $this->cryptoInstance = $cryptoInstance;
851 * Getter for Cryptable instance
853 * @return $cryptoInstance An instance of a Cryptable class
855 public final function getCryptoInstance () {
856 return $this->cryptoInstance;
860 * Setter for the list instance
862 * @param $listInstance A list of Listable
865 protected final function setListInstance (Listable $listInstance) {
866 $this->listInstance = $listInstance;
870 * Getter for the list instance
872 * @return $listInstance A list of Listable
874 protected final function getListInstance () {
875 return $this->listInstance;
879 * Setter for the menu instance
881 * @param $menuInstance A RenderableMenu instance
884 protected final function setMenuInstance (RenderableMenu $menuInstance) {
885 $this->menuInstance = $menuInstance;
889 * Getter for the menu instance
891 * @return $menuInstance A RenderableMenu instance
893 protected final function getMenuInstance () {
894 return $this->menuInstance;
898 * Setter for image instance
900 * @param $imageInstance An instance of an image
903 public final function setImageInstance (BaseImage $imageInstance) {
904 $this->imageInstance = $imageInstance;
908 * Getter for image instance
910 * @return $imageInstance An instance of an image
912 public final function getImageInstance () {
913 return $this->imageInstance;
917 * Setter for stacker instance
919 * @param $stackerInstance An instance of an stacker
922 public final function setStackerInstance (Stackable $stackerInstance) {
923 $this->stackerInstance = $stackerInstance;
927 * Getter for stacker instance
929 * @return $stackerInstance An instance of an stacker
931 public final function getStackerInstance () {
932 return $this->stackerInstance;
936 * Setter for compressor instance
938 * @param $compressorInstance An instance of an compressor
941 public final function setCompressorInstance (Compressor $compressorInstance) {
942 $this->compressorInstance = $compressorInstance;
946 * Getter for compressor instance
948 * @return $compressorInstance An instance of an compressor
950 public final function getCompressorInstance () {
951 return $this->compressorInstance;
955 * Setter for Parseable instance
957 * @param $parserInstance An instance of an Parseable
960 public final function setParserInstance (Parseable $parserInstance) {
961 $this->parserInstance = $parserInstance;
965 * Getter for Parseable instance
967 * @return $parserInstance An instance of an Parseable
969 public final function getParserInstance () {
970 return $this->parserInstance;
974 * Setter for ProtocolHandler instance
976 * @param $protocolInstance An instance of an ProtocolHandler
979 public final function setProtocolInstance (ProtocolHandler $protocolInstance = NULL) {
980 $this->protocolInstance = $protocolInstance;
984 * Getter for ProtocolHandler instance
986 * @return $protocolInstance An instance of an ProtocolHandler
988 public final function getProtocolInstance () {
989 return $this->protocolInstance;
993 * Setter for BaseDatabaseWrapper instance
995 * @param $wrapperInstance An instance of an BaseDatabaseWrapper
998 public final function setWrapperInstance (BaseDatabaseWrapper $wrapperInstance) {
999 $this->wrapperInstance = $wrapperInstance;
1003 * Getter for BaseDatabaseWrapper instance
1005 * @return $wrapperInstance An instance of an BaseDatabaseWrapper
1007 public final function getWrapperInstance () {
1008 return $this->wrapperInstance;
1012 * Setter for socket resource
1014 * @param $socketResource A valid socket resource
1017 public final function setSocketResource ($socketResource) {
1018 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput($this->__toString() . '::' . __FUNCTION__ . ': socketResource=' . $socketResource . ',previous[' . gettype($this->socketResource) . ']=' . $this->socketResource);
1019 $this->socketResource = $socketResource;
1023 * Getter for socket resource
1025 * @return $socketResource A valid socket resource
1027 public final function getSocketResource () {
1028 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput($this->__toString() . '::' . __FUNCTION__ . ': socketResource[' . gettype($this->socketResource) . ']=' . $this->socketResource);
1029 return $this->socketResource;
1033 * Setter for helper instance
1035 * @param $helperInstance An instance of a helper class
1038 protected final function setHelperInstance (Helper $helperInstance) {
1039 $this->helperInstance = $helperInstance;
1043 * Getter for helper instance
1045 * @return $helperInstance An instance of a helper class
1047 public final function getHelperInstance () {
1048 return $this->helperInstance;
1052 * Setter for a Sourceable instance
1054 * @param $sourceInstance The Sourceable instance
1057 protected final function setSourceInstance (Sourceable $sourceInstance) {
1058 $this->sourceInstance = $sourceInstance;
1062 * Getter for a Sourceable instance
1064 * @return $sourceInstance The Sourceable instance
1066 protected final function getSourceInstance () {
1067 return $this->sourceInstance;
1071 * Getter for a InputStreamable instance
1073 * @param $inputStreamInstance The InputStreamable instance
1075 protected final function getInputStreamInstance () {
1076 return $this->inputStreamInstance;
1080 * Setter for a InputStreamable instance
1082 * @param $inputStreamInstance The InputStreamable instance
1085 protected final function setInputStreamInstance (InputStreamable $inputStreamInstance) {
1086 $this->inputStreamInstance = $inputStreamInstance;
1090 * Getter for a OutputStreamable instance
1092 * @param $outputStreamInstance The OutputStreamable instance
1094 protected final function getOutputStreamInstance () {
1095 return $this->outputStreamInstance;
1099 * Setter for a OutputStreamable instance
1101 * @param $outputStreamInstance The OutputStreamable instance
1104 protected final function setOutputStreamInstance (OutputStreamable $outputStreamInstance) {
1105 $this->outputStreamInstance = $outputStreamInstance;
1109 * Setter for handler instance
1111 * @param $handlerInstance An instance of a Handleable class
1114 protected final function setHandlerInstance (Handleable $handlerInstance) {
1115 $this->handlerInstance = $handlerInstance;
1119 * Getter for handler instance
1121 * @return $handlerInstance A Networkable instance
1123 protected final function getHandlerInstance () {
1124 return $this->handlerInstance;
1128 * Setter for visitor instance
1130 * @param $visitorInstance A Visitor instance
1133 protected final function setVisitorInstance (Visitor $visitorInstance) {
1134 $this->visitorInstance = $visitorInstance;
1138 * Getter for visitor instance
1140 * @return $visitorInstance A Visitor instance
1142 protected final function getVisitorInstance () {
1143 return $this->visitorInstance;
1147 * Setter for raw package Data
1149 * @param $packageData Raw package Data
1152 public final function setPackageData (array $packageData) {
1153 $this->packageData = $packageData;
1157 * Getter for raw package Data
1159 * @return $packageData Raw package Data
1161 public function getPackageData () {
1162 return $this->packageData;
1167 * Setter for Iterator instance
1169 * @param $iteratorInstance An instance of an Iterator
1172 protected final function setIteratorInstance (Iterator $iteratorInstance) {
1173 $this->iteratorInstance = $iteratorInstance;
1177 * Getter for Iterator instance
1179 * @return $iteratorInstance An instance of an Iterator
1181 public final function getIteratorInstance () {
1182 return $this->iteratorInstance;
1186 * Checks whether an object equals this object. You should overwrite this
1187 * method to implement own equality checks
1189 * @param $objectInstance An instance of a FrameworkInterface object
1190 * @return $equals Whether both objects equals
1192 public function equals (FrameworkInterface $objectInstance) {
1195 $this->__toString() == $objectInstance->__toString()
1197 $this->hashCode() == $objectInstance->hashCode()
1200 // Return the result
1205 * Generates a generic hash code of this class. You should really overwrite
1206 * this method with your own hash code generator code. But keep KISS in mind.
1208 * @return $hashCode A generic hash code respresenting this whole class
1210 public function hashCode () {
1212 return crc32($this->__toString());
1216 * Formats computer generated price values into human-understandable formats
1217 * with thousand and decimal separators.
1219 * @param $value The in computer format value for a price
1220 * @param $currency The currency symbol (use HTML-valid characters!)
1221 * @param $decNum Number of decimals after commata
1222 * @return $price The for the current language formated price string
1223 * @throws MissingDecimalsThousandsSeparatorException If decimals or
1224 * thousands separator
1227 public function formatCurrency ($value, $currency = '€', $decNum = 2) {
1228 // Are all required attriutes set?
1229 if ((!isset($this->decimals)) || (!isset($this->thousands))) {
1230 // Throw an exception
1231 throw new MissingDecimalsThousandsSeparatorException($this, self::EXCEPTION_ATTRIBUTES_ARE_MISSING);
1235 $value = (float) $value;
1237 // Reformat the US number
1238 $price = number_format($value, $decNum, $this->decimals, $this->thousands) . $currency;
1240 // Return as string...
1245 * Appends a trailing slash to a string
1247 * @param $str A string (maybe) without trailing slash
1248 * @return $str A string with an auto-appended trailing slash
1250 public final function addMissingTrailingSlash ($str) {
1251 // Is there a trailing slash?
1252 if (substr($str, -1, 1) != '/') {
1256 // Return string with trailing slash
1261 * Prepare the template engine (WebTemplateEngine by default) for a given
1262 * application helper instance (ApplicationHelper by default).
1264 * @param $applicationInstance An application helper instance or
1265 * null if we shall use the default
1266 * @return $templateInstance The template engine instance
1267 * @throws NullPointerException If the discovered application
1268 * instance is still null
1270 protected function prepareTemplateInstance (ManageableApplication $applicationInstance = NULL) {
1271 // Is the application instance set?
1272 if (is_null($applicationInstance)) {
1273 // Get the current instance
1274 $applicationInstance = $this->getApplicationInstance();
1277 if (is_null($applicationInstance)) {
1278 // Thrown an exception
1279 throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
1283 // Initialize the template engine
1284 $templateInstance = ObjectFactory::createObjectByConfiguredName('web_template_class');
1286 // Return the prepared instance
1287 return $templateInstance;
1291 * Debugs this instance by putting out it's full content
1293 * @param $message Optional message to show in debug output
1296 public final function debugInstance ($message = '') {
1297 // Restore the error handler to avoid trouble with missing array elements or undeclared variables
1298 restore_error_handler();
1303 // Is a message set?
1304 if (!empty($message)) {
1305 // Construct message
1306 $content = sprintf("<div class=\"debug_message\">Message: %s</div>\n", $message);
1309 // Generate the output
1310 $content .= sprintf("<pre>%s</pre>",
1313 print_r($this, true)
1319 ApplicationEntryPoint::app_die(sprintf("<div class=\"debug_header\">%s debug output:</div><div class=\"debug_content\">%s</div>\nLoaded includes: <div class=\"debug_include_list\">%s</div>",
1320 $this->__toString(),
1322 ClassLoader::getSelfInstance()->getPrintableIncludeList()
1327 * Replaces control characters with printable output
1329 * @param $str String with control characters
1330 * @return $str Replaced string
1332 protected function replaceControlCharacters ($str) {
1335 chr(13), '[r]', str_replace(
1336 chr(10), '[n]', str_replace(
1346 * Output a partial stub message for the caller method
1348 * @param $message An optional message to display
1351 protected function partialStub ($message = '') {
1352 // Get the backtrace
1353 $backtrace = debug_backtrace();
1355 // Generate the class::method string
1356 $methodName = 'UnknownClass->unknownMethod';
1357 if ((isset($backtrace[1]['class'])) && (isset($backtrace[1]['function']))) {
1358 $methodName = $backtrace[1]['class'] . '->' . $backtrace[1]['function'];
1361 // Construct the full message
1362 $stubMessage = sprintf('[%s:] Partial stub!',
1366 // Is the extra message given?
1367 if (!empty($message)) {
1368 // Then add it as well
1369 $stubMessage .= ' Message: ' . $message;
1372 // Debug instance is there?
1373 if (!is_null($this->getDebugInstance())) {
1374 // Output stub message
1375 self::createDebugInstance(__CLASS__)->debugOutput($stubMessage);
1378 trigger_error($stubMessage);
1383 * Outputs a debug backtrace and stops further script execution
1385 * @param $message An optional message to output
1386 * @param $doExit Whether exit the program (true is default)
1389 public function debugBackTrace ($message = '', $doExit = true) {
1390 // Sorry, there is no other way getting this nice backtrace
1391 if (!empty($message)) {
1393 printf('Message: %s<br />' . chr(10), $message);
1397 debug_print_backtrace();
1401 if ($doExit === true) {
1407 * Creates an instance of a debugger instance
1409 * @param $className Name of the class (currently unsupported)
1410 * @return $debugInstance An instance of a debugger class
1412 public final static function createDebugInstance ($className) {
1413 // Init debug instance
1414 $debugInstance = NULL;
1418 // Get a debugger instance
1419 $debugInstance = DebugMiddleware::createDebugMiddleware(FrameworkConfiguration::getSelfInstance()->getConfigEntry('debug_class'));
1420 } catch (NullPointerException $e) {
1421 // Didn't work, no instance there
1422 die('Cannot create debugInstance! Exception=' . $e->__toString() . ', message=' . $e->getMessage());
1425 // Empty string should be ignored and used for testing the middleware
1426 DebugMiddleware::getSelfInstance()->output('');
1429 return $debugInstance;
1433 * Outputs a debug message whether to debug instance (should be set!) or
1434 * dies with or ptints the message. Do NEVER EVER rewrite the die() call to
1435 * ApplicationEntryPoint::app_die(), this would cause an endless loop.
1437 * @param $message Message we shall send out...
1438 * @param $doPrint Whether print or die here (default: print)
1439 * @paran $stripTags Whether to strip tags (default: false)
1442 public function debugOutput ($message, $doPrint = true, $stripTags = false) {
1443 // Set debug instance to NULL
1444 $debugInstance = NULL;
1448 // Get debug instance
1449 $debugInstance = $this->getDebugInstance();
1450 } catch (NullPointerException $e) {
1451 // The debug instance is not set (yet)
1454 // Is the debug instance there?
1455 if (is_object($debugInstance)) {
1456 // Use debug output handler
1457 $debugInstance->output($message, $stripTags);
1459 if ($doPrint === false) {
1460 // Die here if not printed
1464 // Are debug times enabled?
1465 if ($this->getConfigInstance()->getConfigEntry('debug_output_timings') == 'Y') {
1467 $message = $this->getPrintableExecutionTime() . $message;
1471 if ($doPrint === true) {
1473 print($message . chr(10));
1482 * Converts e.g. a command from URL to a valid class by keeping out bad characters
1484 * @param $str The string, what ever it is needs to be converted
1485 * @return $className Generated class name
1487 public function convertToClassName ($str) {
1491 // Convert all dashes in underscores
1492 $str = $this->convertDashesToUnderscores($str);
1494 // Now use that underscores to get classname parts for hungarian style
1495 foreach (explode('_', $str) as $strPart) {
1496 // Make the class name part lower case and first upper case
1497 $className .= ucfirst(strtolower($strPart));
1500 // Return class name
1505 * Converts dashes to underscores, e.g. useable for configuration entries
1507 * @param $str The string with maybe dashes inside
1508 * @return $str The converted string with no dashed, but underscores
1510 public final function convertDashesToUnderscores ($str) {
1512 $str = str_replace('-', '_', $str);
1514 // Return converted string
1519 * Marks up the code by adding e.g. line numbers
1521 * @param $phpCode Unmarked PHP code
1522 * @return $markedCode Marked PHP code
1524 public function markupCode ($phpCode) {
1529 $errorArray = error_get_last();
1531 // Init the code with error message
1532 if (is_array($errorArray)) {
1534 $markedCode = sprintf('<div id="error_header">File: <span id="error_data">%s</span>, Line: <span id="error_data">%s</span>, Message: <span id="error_data">%s</span>, Type: <span id="error_data">%s</span></div>',
1535 basename($errorArray['file']),
1536 $errorArray['line'],
1537 $errorArray['message'],
1542 // Add line number to the code
1543 foreach (explode(chr(10), $phpCode) as $lineNo => $code) {
1545 $markedCode .= sprintf('<span id="code_line">%s</span>: %s' . chr(10),
1547 htmlentities($code, ENT_QUOTES)
1556 * Filter a given GMT timestamp (non Uni* stamp!) to make it look more
1557 * beatiful for web-based front-ends. If null is given a message id
1558 * null_timestamp will be resolved and returned.
1560 * @param $timestamp Timestamp to prepare (filter) for display
1561 * @return $readable A readable timestamp
1563 public function doFilterFormatTimestamp ($timestamp) {
1564 // Default value to return
1567 // Is the timestamp null?
1568 if (is_null($timestamp)) {
1569 // Get a message string
1570 $readable = $this->getLanguageInstance()->getMessage('null_timestamp');
1572 switch ($this->getLanguageInstance()->getLanguageCode()) {
1573 case 'de': // German format is a bit different to default
1574 // Split the GMT stamp up
1575 $dateTime = explode(' ', $timestamp );
1576 $dateArray = explode('-', $dateTime[0]);
1577 $timeArray = explode(':', $dateTime[1]);
1579 // Construct the timestamp
1580 $readable = sprintf($this->getConfigInstance()->getConfigEntry('german_date_time'),
1590 default: // Default is pass-through
1591 $readable = $timestamp;
1601 * Filter a given number into a localized number
1603 * @param $value The raw value from e.g. database
1604 * @return $localized Localized value
1606 public function doFilterFormatNumber ($value) {
1607 // Generate it from config and localize dependencies
1608 switch ($this->getLanguageInstance()->getLanguageCode()) {
1609 case 'de': // German format is a bit different to default
1610 $localized = number_format($value, $this->getConfigInstance()->getConfigEntry('decimals'), ',', '.');
1613 default: // US, etc.
1614 $localized = number_format($value, $this->getConfigInstance()->getConfigEntry('decimals'), '.', ',');
1623 * "Getter" for databse entry
1625 * @return $entry An array with database entries
1626 * @throws NullPointerException If the database result is not found
1627 * @throws InvalidDatabaseResultException If the database result is invalid
1629 protected final function getDatabaseEntry () {
1630 // Is there an instance?
1631 if (is_null($this->getResultInstance())) {
1632 // Throw an exception here
1633 throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
1637 $this->getResultInstance()->rewind();
1639 // Do we have an entry?
1640 if ($this->getResultInstance()->valid() === false) {
1641 throw new InvalidDatabaseResultException(array($this, $this->getResultInstance()), DatabaseResult::EXCEPTION_INVALID_DATABASE_RESULT);
1645 $this->getResultInstance()->next();
1648 $entry = $this->getResultInstance()->current();
1655 * Getter for field name
1657 * @param $fieldName Field name which we shall get
1658 * @return $fieldValue Field value from the user
1659 * @throws NullPointerException If the result instance is null
1661 public final function getField ($fieldName) {
1662 // Default field value
1665 // Get result instance
1666 $resultInstance = $this->getResultInstance();
1668 // Is this instance null?
1669 if (is_null($resultInstance)) {
1670 // Then the user instance is no longer valid (expired cookies?)
1671 throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
1674 // Get current array
1675 $fieldArray = $resultInstance->current();
1676 //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput($fieldName.':<pre>'.print_r($fieldArray, true).'</pre>');
1678 // Convert dashes to underscore
1679 $fieldName = $this->convertDashesToUnderscores($fieldName);
1681 // Does the field exist?
1682 if (isset($fieldArray[$fieldName])) {
1684 $fieldValue = $fieldArray[$fieldName];
1686 // Missing field entry, may require debugging
1687 self::createDebugInstance(__CLASS__)->debugOutput($this->__toString() . ':fieldname=' . $fieldName . ' not found!');
1695 * Flushs all pending updates to the database layer
1699 public function flushPendingUpdates () {
1700 // Get result instance
1701 $resultInstance = $this->getResultInstance();
1703 // Do we have data to update?
1704 if ((is_object($resultInstance)) && ($resultInstance->ifDataNeedsFlush())) {
1705 // Get wrapper class name config entry
1706 $configEntry = $resultInstance->getUpdateInstance()->getWrapperConfigEntry();
1708 // Create object instance
1709 $wrapperInstance = ObjectFactory::createObjectByConfiguredName($configEntry);
1711 // Yes, then send the whole result to the database layer
1712 $wrapperInstance->doUpdateByResult($this->getResultInstance());
1717 * Outputs a deprecation warning to the developer.
1719 * @param $message The message we shall output to the developer
1721 * @todo Write a logging mechanism for productive mode
1723 public function deprecationWarning ($message) {
1724 // Is developer mode active?
1725 if (defined('DEVELOPER')) {
1726 // Debug instance is there?
1727 if (!is_null($this->getDebugInstance())) {
1728 // Output stub message
1729 self::createDebugInstance(__CLASS__)->debugOutput($message);
1732 trigger_error($message . "<br />\n");
1735 // @TODO Finish this part!
1736 $this->partialStub('Developer mode inactive. Message:' . $message);
1741 * Checks whether the given PHP extension is loaded
1743 * @param $phpExtension The PHP extension we shall check
1744 * @return $isLoaded Whether the PHP extension is loaded
1746 public final function isPhpExtensionLoaded ($phpExtension) {
1748 $isLoaded = in_array($phpExtension, get_loaded_extensions());
1755 * "Getter" as a time() replacement but with milliseconds. You should use this
1756 * method instead of the encapsulated getimeofday() function.
1758 * @return $milliTime Timestamp with milliseconds
1760 public function getMilliTime () {
1761 // Get the time of day as float
1762 $milliTime = gettimeofday(true);
1769 * Idles (sleeps) for given milliseconds
1771 * @return $hasSlept Whether it goes fine
1773 public function idle ($milliSeconds) {
1774 // Sleep is fine by default
1777 // Idle so long with found function
1778 if (function_exists('time_sleep_until')) {
1779 // Get current time and add idle time
1780 $sleepUntil = $this->getMilliTime() + abs($milliSeconds) / 1000;
1782 // New PHP 5.1.0 function found, ignore errors
1783 $hasSlept = @time_sleep_until($sleepUntil);
1786 * My Sun station doesn't have that function even with latest PHP
1789 usleep($milliSeconds * 1000);
1796 * Converts a hexadecimal string, even with negative sign as first string to
1797 * a decimal number using BC functions.
1799 * This work is based on comment #86673 on php.net documentation page at:
1800 * <http://de.php.net/manual/en/function.dechex.php#86673>
1802 * @param $hex Hexadecimal string
1803 * @return $dec Decimal number
1805 protected function hex2dec ($hex) {
1806 // Convert to all lower-case
1807 $hex = strtolower($hex);
1809 // Detect sign (negative/positive numbers)
1811 if (substr($hex, 0, 1) == '-') {
1813 $hex = substr($hex, 1);
1816 // Decode the hexadecimal string into a decimal number
1818 for ($i = strlen($hex) - 1, $e = 1; $i >= 0; $i--, $e = bcmul($e, 16)) {
1819 $factor = self::$hexdec[substr($hex, $i, 1)];
1820 $dec = bcadd($dec, bcmul($factor, $e));
1823 // Return the decimal number
1824 return $sign . $dec;
1828 * Converts even very large decimal numbers, also with negative sign, to a
1829 * hexadecimal string.
1831 * This work is based on comment #97756 on php.net documentation page at:
1832 * <http://de.php.net/manual/en/function.hexdec.php#97756>
1834 * @param $dec Decimal number, even with negative sign
1835 * @param $maxLength Optional maximum length of the string
1836 * @return $hex Hexadecimal string
1838 protected function dec2hex ($dec, $maxLength = 0) {
1839 // maxLength can be zero or devideable by 2
1840 assert(($maxLength == 0) || (($maxLength % 2) == 0));
1842 // Detect sign (negative/positive numbers)
1849 // Encode the decimal number into a hexadecimal string
1852 $hex = self::$dechex[($dec % 16)] . $hex;
1854 } while ($dec >= 1);
1857 * We need hexadecimal strings with leading zeros if the length cannot
1860 if ($maxLength > 0) {
1861 // Prepend more zeros
1862 $hex = $this->prependStringToString($hex, '0', $maxLength);
1863 } elseif ((strlen($hex) % 2) != 0) {
1867 // Return the hexadecimal string
1868 return $sign . $hex;
1872 * Converts a ASCII string (0 to 255) into a decimal number.
1874 * @param $asc The ASCII string to be converted
1875 * @return $dec Decimal number
1877 protected function asc2dec ($asc) {
1878 // Convert it into a hexadecimal number
1879 $hex = bin2hex($asc);
1881 // And back into a decimal number
1882 $dec = $this->hex2dec($hex);
1889 * Converts a decimal number into an ASCII string.
1891 * @param $dec Decimal number
1892 * @return $asc An ASCII string
1894 protected function dec2asc ($dec) {
1895 // First convert the number into a hexadecimal string
1896 $hex = $this->dec2hex($dec);
1898 // Then convert it into the ASCII string
1899 $asc = $this->hex2asc($hex);
1906 * Converts a hexadecimal number into an ASCII string. Negative numbers
1909 * @param $hex Hexadecimal string
1910 * @return $asc An ASCII string
1912 protected function hex2asc ($hex) {
1913 // Check for length, it must be devideable by 2
1914 //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('hex='.$hex);
1915 assert((strlen($hex) % 2) == 0);
1919 for ($idx = 0; $idx < strlen($hex); $idx+=2) {
1920 // Get the decimal number of the chunk
1921 $part = hexdec(substr($hex, $idx, 2));
1923 // Add it to the final string
1927 // Return the final string
1932 * Prepends a given string $prepend to $str with a given total length
1934 * @param $str Given original string which should be prepended
1935 * @param $prepend The string to prepend
1936 * @param $length Total length of the final string
1937 * @return $strFinal Final prepended string
1939 protected function prependStringToString ($str, $prepend, $length) {
1940 // Set final string to original string by default
1944 if (strlen($str) < $length) {
1945 // Difference between total length and length of original string
1946 $diff = $length - strlen($str);
1948 // Prepend the string
1949 $prepend = str_repeat($prepend, ($diff / strlen($prepend) + 1));
1951 // Make sure it will definedly fit
1952 assert(strlen($prepend) >= $diff);
1954 // Cut it a little down
1955 $prepend = substr($prepend, 0, $diff);
1956 //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('prepend('.strlen($prepend).')='.$prepend.',diff='.$diff.',length='.$length);
1958 // Construct the final prepended string
1959 $strFinal = $prepend . $str;
1967 * Checks whether the given encoded data was encoded with Base64
1969 * @param $encodedData Encoded data we shall check
1970 * @return $isBase64 Whether the encoded data is Base64
1972 protected function isBase64Encoded ($encodedData) {
1974 $isBase64 = (@base64_decode($encodedData, true) !== false);
1981 * "Getter" to get response/request type from analysis of the system.
1983 * @return $responseType Analyzed response type
1985 protected function getResponseTypeFromSystem () {
1986 // Default is console
1987 $responseType = 'console';
1989 // Is 'HTTP_HOST' set?
1990 if (isset($_SERVER['HTTP_HOST'])) {
1991 // Then it is a HTTP response/request
1992 $responseType = 'http';
1996 return $responseType;
2000 * Gets a cache key from Criteria instance
2002 * @param $criteriaInstance An instance of a Criteria class
2003 * @param $onlyKeys Only use these keys for a cache key
2004 * @return $cacheKey A cache key suitable for lookup/storage purposes
2006 protected function getCacheKeyByCriteria (Criteria $criteriaInstance, array $onlyKeys = array()) {
2008 $cacheKey = sprintf("%s@%s",
2009 $this->__toString(),
2010 $criteriaInstance->getCacheKey($onlyKeys)
2014 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput($this->__toString() . ': cacheKey=' . $cacheKey);
2019 * Getter for startup time in miliseconds
2021 * @return $startupTime Startup time in miliseconds
2023 protected function getStartupTime () {
2024 return self::$startupTime;
2028 * "Getter" for a printable currently execution time in nice braces
2030 * @return $executionTime Current execution time in nice braces
2032 protected function getPrintableExecutionTime () {
2033 // Caculate the execution time
2034 $executionTime = microtime(true) - $this->getStartupTime();
2036 // Pack it in nice braces
2037 $executionTime = sprintf('[ %01.5f ] ', $executionTime);
2040 return $executionTime;
2044 * Hashes a given string with a simple but stronger hash function (no salts)
2046 * @param $str The string to be hashed
2047 * @return $hash The hash from string $str
2049 public function hashString ($str) {
2050 // Hash given string with (better secure) hasher
2051 $hash = mhash(MHASH_SHA256, $str);
2058 * Checks whether the given number is really a number (only chars 0-9).
2060 * @param $num A string consisting only chars between 0 and 9
2061 * @param $castValue Whether to cast the value to double. Do only use this to secure numbers from Requestable classes.
2062 * @param $assertMismatch Whether to assert mismatches
2063 * @return $ret The (hopefully) secured numbered value
2065 public function bigintval ($num, $castValue = true, $assertMismatch = false) {
2066 // Filter all numbers out
2067 $ret = preg_replace('/[^0123456789]/', '', $num);
2070 if ($castValue === true) {
2071 // Cast to biggest numeric type
2072 $ret = (double) $ret;
2075 // Assert only if requested
2076 if ($assertMismatch === true) {
2077 // Has the whole value changed?
2078 assert(('' . $ret . '' != '' . $num . '') && (!is_null($num)));
2086 * Checks whether the given hexadecimal number is really a hex-number (only chars 0-9,a-f).
2088 * @param $num A string consisting only chars between 0 and 9
2089 * @param $assertMismatch Whether to assert mismatches
2090 * @return $ret The (hopefully) secured hext-numbered value
2092 public function hexval ($num, $assertMismatch = false) {
2093 // Filter all numbers out
2094 $ret = preg_replace('/[^0123456789abcdefABCDEF]/', '', $num);
2096 // Assert only if requested
2097 if ($assertMismatch === true) {
2098 // Has the whole value changed?
2099 assert(('' . $ret . '' != '' . $num . '') && (!is_null($num)));