3 /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
6 * The PEAR DB driver for PHP's oci8 extension
7 * for interacting with Oracle databases
11 * LICENSE: This source file is subject to version 3.0 of the PHP license
12 * that is available through the world-wide-web at the following URI:
13 * http://www.php.net/license/3_0.txt. If you did not receive a copy of
14 * the PHP License and are unable to obtain it through the web, please
15 * send a note to license@php.net so we can mail you a copy immediately.
19 * @author James L. Pine <jlp@valinux.com>
20 * @author Daniel Convissor <danielc@php.net>
21 * @copyright 1997-2007 The PHP Group
22 * @license http://www.php.net/license/3_0.txt PHP License 3.0
23 * @version CVS: $Id: oci8.php,v 1.116 2007/11/28 02:22:39 aharvey Exp $
24 * @link http://pear.php.net/package/DB
28 * Obtain the DB_common class so it can be extended from
30 require_once 'DB/common.php';
33 * The methods PEAR DB uses to interact with PHP's oci8 extension
34 * for interacting with Oracle databases
36 * Definitely works with versions 8 and 9 of Oracle.
38 * These methods overload the ones declared in DB_common.
40 * Be aware... OCIError() only appears to return anything when given a
41 * statement, so functions return the generic DB_ERROR instead of more
42 * useful errors that have to do with feedback from the database.
46 * @author James L. Pine <jlp@valinux.com>
47 * @author Daniel Convissor <danielc@php.net>
48 * @copyright 1997-2007 The PHP Group
49 * @license http://www.php.net/license/3_0.txt PHP License 3.0
50 * @version Release: 1.7.14RC1
51 * @link http://pear.php.net/package/DB
53 class DB_oci8 extends DB_common
58 * The DB driver type (mysql, oci8, odbc, etc.)
61 var $phptype = 'oci8';
64 * The database syntax variant to be used (db2, access, etc.), if any
67 var $dbsyntax = 'oci8';
70 * The capabilities of this DB implementation
72 * The 'new_link' element contains the PHP version that first provided
73 * new_link support for this DBMS. Contains false if it's unsupported.
75 * Meaning of the 'limit' element:
76 * + 'emulate' = emulate with fetch row by number
77 * + 'alter' = alter the query
82 var $features = array(
84 'new_link' => '5.0.0',
85 'numrows' => 'subquery',
89 'transactions' => true,
93 * A mapping of native error codes to DB error codes
96 var $errorcode_map = array(
97 1 => DB_ERROR_CONSTRAINT,
98 900 => DB_ERROR_SYNTAX,
99 904 => DB_ERROR_NOSUCHFIELD,
100 913 => DB_ERROR_VALUE_COUNT_ON_ROW,
101 921 => DB_ERROR_SYNTAX,
102 923 => DB_ERROR_SYNTAX,
103 942 => DB_ERROR_NOSUCHTABLE,
104 955 => DB_ERROR_ALREADY_EXISTS,
105 1400 => DB_ERROR_CONSTRAINT_NOT_NULL,
106 1401 => DB_ERROR_INVALID,
107 1407 => DB_ERROR_CONSTRAINT_NOT_NULL,
108 1418 => DB_ERROR_NOT_FOUND,
109 1476 => DB_ERROR_DIVZERO,
110 1722 => DB_ERROR_INVALID_NUMBER,
111 2289 => DB_ERROR_NOSUCHTABLE,
112 2291 => DB_ERROR_CONSTRAINT,
113 2292 => DB_ERROR_CONSTRAINT,
114 2449 => DB_ERROR_CONSTRAINT,
115 12899 => DB_ERROR_INVALID,
119 * The raw database connection created by PHP
125 * The DSN information for connecting to a database
132 * Should data manipulation queries be committed automatically?
136 var $autocommit = true;
139 * Stores the $data passed to execute() in the oci8 driver
141 * Gets reset to array() when simpleQuery() is run.
143 * Needed in case user wants to call numRows() after prepare/execute
149 var $_data = array();
152 * The result or statement handle from the most recently executed query
158 * Is the given prepared statement a data manipulation query?
162 var $manip_query = array();
165 * Store of prepared SQL queries.
169 var $_prepared_queries = array();
176 * This constructor calls <kbd>$this->DB_common()</kbd>
189 * Connect to the database server, log in and open the database
191 * Don't call this method directly. Use DB::connect() instead.
193 * If PHP is at version 5.0.0 or greater:
194 * + Generally, oci_connect() or oci_pconnect() are used.
195 * + But if the new_link DSN option is set to true, oci_new_connect()
198 * When using PHP version 4.x, OCILogon() or OCIPLogon() are used.
200 * PEAR DB's oci8 driver supports the following extra DSN options:
201 * + charset The character set to be used on the connection.
202 * Only used if PHP is at version 5.0.0 or greater
203 * and the Oracle server is at 9.2 or greater.
204 * Available since PEAR DB 1.7.0.
205 * + new_link If set to true, causes subsequent calls to
206 * connect() to return a new connection link
207 * instead of the existing one. WARNING: this is
208 * not portable to other DBMS's.
209 * Available since PEAR DB 1.7.0.
211 * @param array $dsn the data source name
212 * @param bool $persistent should the connection be persistent?
214 * @return int DB_OK on success. A DB_Error object on failure.
216 function connect($dsn, $persistent = false)
218 if (!PEAR::loadExtension('oci8')) {
219 return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
223 if ($dsn['dbsyntax']) {
224 $this->dbsyntax = $dsn['dbsyntax'];
227 // Backwards compatibility with DB < 1.7.0
228 if (empty($dsn['database']) && !empty($dsn['hostspec'])) {
229 $db = $dsn['hostspec'];
231 $db = $dsn['database'];
234 if (function_exists('oci_connect')) {
235 if (isset($dsn['new_link'])
236 && ($dsn['new_link'] == 'true' || $dsn['new_link'] === true))
238 $connect_function = 'oci_new_connect';
240 $connect_function = $persistent ? 'oci_pconnect'
243 if (isset($this->dsn['port']) && $this->dsn['port']) {
244 $db = '//'.$db.':'.$this->dsn['port'];
247 $char = empty($dsn['charset']) ? null : $dsn['charset'];
248 $this->connection = @$connect_function($dsn['username'],
253 if (!empty($error) && $error['code'] == 12541) {
254 // Couldn't find TNS listener. Try direct connection.
255 $this->connection = @$connect_function($dsn['username'],
261 $connect_function = $persistent ? 'OCIPLogon' : 'OCILogon';
263 $this->connection = @$connect_function($dsn['username'],
266 } elseif ($dsn['username'] || $dsn['password']) {
267 $this->connection = @$connect_function($dsn['username'],
272 if (!$this->connection) {
274 $error = (is_array($error)) ? $error['message'] : null;
275 return $this->raiseError(DB_ERROR_CONNECT_FAILED,
286 * Disconnects from the database server
288 * @return bool TRUE on success, FALSE on failure
290 function disconnect()
292 if (function_exists('oci_close')) {
293 $ret = @oci_close($this->connection);
295 $ret = @OCILogOff($this->connection);
297 $this->connection = null;
305 * Sends a query to the database server
307 * To determine how many rows of a result set get buffered using
308 * ocisetprefetch(), see the "result_buffering" option in setOptions().
309 * This option was added in Release 1.7.0.
311 * @param string the SQL query string
313 * @return mixed + a PHP result resrouce for successful SELECT queries
314 * + the DB_OK constant for other successful queries
315 * + a DB_Error object on failure
317 function simpleQuery($query)
319 $this->_data = array();
320 $this->last_parameters = array();
321 $this->last_query = $query;
322 $query = $this->modifyQuery($query);
323 $result = @OCIParse($this->connection, $query);
325 return $this->oci8RaiseError();
327 if ($this->autocommit) {
328 $success = @OCIExecute($result,OCI_COMMIT_ON_SUCCESS);
330 $success = @OCIExecute($result,OCI_DEFAULT);
333 return $this->oci8RaiseError($result);
335 $this->last_stmt = $result;
336 if ($this->_checkManip($query)) {
339 @ocisetprefetch($result, $this->options['result_buffering']);
348 * Move the internal oracle result pointer to the next available result
350 * @param a valid oci8 result resource
354 * @return true if a result is available otherwise return false
356 function nextResult($result)
365 * Places a row from the result set into the given array
367 * Formating of the array and the data therein are configurable.
368 * See DB_result::fetchInto() for more information.
370 * This method is not meant to be called directly. Use
371 * DB_result::fetchInto() instead. It can't be declared "protected"
372 * because DB_result is a separate object.
374 * @param resource $result the query result resource
375 * @param array $arr the referenced array to put the data in
376 * @param int $fetchmode how the resulting array should be indexed
377 * @param int $rownum the row number to fetch (0 = first row)
379 * @return mixed DB_OK on success, NULL when the end of a result set is
380 * reached or on failure
382 * @see DB_result::fetchInto()
384 function fetchInto($result, &$arr, $fetchmode, $rownum = null)
386 if ($rownum !== null) {
387 return $this->raiseError(DB_ERROR_NOT_CAPABLE);
389 if ($fetchmode & DB_FETCHMODE_ASSOC) {
390 $moredata = @OCIFetchInto($result,$arr,OCI_ASSOC+OCI_RETURN_NULLS+OCI_RETURN_LOBS);
391 if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE &&
394 $arr = array_change_key_case($arr, CASE_LOWER);
397 $moredata = OCIFetchInto($result,$arr,OCI_RETURN_NULLS+OCI_RETURN_LOBS);
402 if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
403 $this->_rtrimArrayValues($arr);
405 if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
406 $this->_convertNullArrayValuesToEmpty($arr);
415 * Deletes the result set and frees the memory occupied by the result set
417 * This method is not meant to be called directly. Use
418 * DB_result::free() instead. It can't be declared "protected"
419 * because DB_result is a separate object.
421 * @param resource $result PHP's query result resource
423 * @return bool TRUE on success, FALSE if $result is invalid
425 * @see DB_result::free()
427 function freeResult($result)
429 return is_resource($result) ? OCIFreeStatement($result) : false;
433 * Frees the internal resources associated with a prepared query
435 * @param resource $stmt the prepared statement's resource
436 * @param bool $free_resource should the PHP resource be freed too?
437 * Use false if you need to get data
438 * from the result set later.
440 * @return bool TRUE on success, FALSE if $result is invalid
442 * @see DB_oci8::prepare()
444 function freePrepared($stmt, $free_resource = true)
446 if (!is_resource($stmt)) {
449 if ($free_resource) {
450 @ocifreestatement($stmt);
452 if (isset($this->prepare_types[(int)$stmt])) {
453 unset($this->prepare_types[(int)$stmt]);
454 unset($this->manip_query[(int)$stmt]);
465 * Gets the number of rows in a result set
467 * Only works if the DB_PORTABILITY_NUMROWS portability option
470 * This method is not meant to be called directly. Use
471 * DB_result::numRows() instead. It can't be declared "protected"
472 * because DB_result is a separate object.
474 * @param resource $result PHP's query result resource
476 * @return int the number of rows. A DB_Error object on failure.
478 * @see DB_result::numRows(), DB_common::setOption()
480 function numRows($result)
482 // emulate numRows for Oracle. yuck.
483 if ($this->options['portability'] & DB_PORTABILITY_NUMROWS &&
484 $result === $this->last_stmt)
486 $countquery = 'SELECT COUNT(*) FROM ('.$this->last_query.')';
487 $save_query = $this->last_query;
488 $save_stmt = $this->last_stmt;
490 $count = $this->query($countquery);
492 // Restore the last query and statement.
493 $this->last_query = $save_query;
494 $this->last_stmt = $save_stmt;
496 if (DB::isError($count) ||
497 DB::isError($row = $count->fetchRow(DB_FETCHMODE_ORDERED)))
499 return $this->raiseError(DB_ERROR_NOT_CAPABLE);
504 return $this->raiseError(DB_ERROR_NOT_CAPABLE);
511 * Gets the number of columns in a result set
513 * This method is not meant to be called directly. Use
514 * DB_result::numCols() instead. It can't be declared "protected"
515 * because DB_result is a separate object.
517 * @param resource $result PHP's query result resource
519 * @return int the number of columns. A DB_Error object on failure.
521 * @see DB_result::numCols()
523 function numCols($result)
525 $cols = @OCINumCols($result);
527 return $this->oci8RaiseError($result);
536 * Prepares a query for multiple execution with execute().
538 * With oci8, this is emulated.
540 * prepare() requires a generic query as string like <code>
541 * INSERT INTO numbers VALUES (?, ?, ?)
542 * </code>. The <kbd>?</kbd> characters are placeholders.
544 * Three types of placeholders can be used:
545 * + <kbd>?</kbd> a quoted scalar value, i.e. strings, integers
546 * + <kbd>!</kbd> value is inserted 'as is'
547 * + <kbd>&</kbd> requires a file name. The file's contents get
548 * inserted into the query (i.e. saving binary
551 * Use backslashes to escape placeholder characters if you don't want
552 * them to be interpreted as placeholders. Example: <code>
553 * "UPDATE foo SET col=? WHERE col='over \& under'"
556 * @param string $query the query to be prepared
558 * @return mixed DB statement resource on success. DB_Error on failure.
560 * @see DB_oci8::execute()
562 function prepare($query)
564 $tokens = preg_split('/((?<!\\\)[&?!])/', $query, -1,
565 PREG_SPLIT_DELIM_CAPTURE);
566 $binds = count($tokens) - 1;
571 foreach ($tokens as $key => $val) {
574 $types[$token++] = DB_PARAM_SCALAR;
575 unset($tokens[$key]);
578 $types[$token++] = DB_PARAM_OPAQUE;
579 unset($tokens[$key]);
582 $types[$token++] = DB_PARAM_MISC;
583 unset($tokens[$key]);
586 $tokens[$key] = preg_replace('/\\\([&?!])/', "\\1", $val);
587 if ($key != $binds) {
588 $newquery .= $tokens[$key] . ':bind' . $token;
590 $newquery .= $tokens[$key];
595 $this->last_query = $query;
596 $newquery = $this->modifyQuery($newquery);
597 if (!$stmt = @OCIParse($this->connection, $newquery)) {
598 return $this->oci8RaiseError();
600 $this->prepare_types[(int)$stmt] = $types;
601 $this->manip_query[(int)$stmt] = DB::isManip($query);
602 $this->_prepared_queries[(int)$stmt] = $newquery;
610 * Executes a DB statement prepared with prepare().
612 * To determine how many rows of a result set get buffered using
613 * ocisetprefetch(), see the "result_buffering" option in setOptions().
614 * This option was added in Release 1.7.0.
616 * @param resource $stmt a DB statement resource returned from prepare()
617 * @param mixed $data array, string or numeric data to be used in
618 * execution of the statement. Quantity of items
619 * passed must match quantity of placeholders in
620 * query: meaning 1 for non-array items or the
621 * quantity of elements in the array.
623 * @return mixed returns an oic8 result resource for successful SELECT
624 * queries, DB_OK for other successful queries.
625 * A DB error object is returned on failure.
627 * @see DB_oci8::prepare()
629 function &execute($stmt, $data = array())
631 $data = (array)$data;
632 $this->last_parameters = $data;
633 $this->last_query = $this->_prepared_queries[(int)$stmt];
634 $this->_data = $data;
636 $types = $this->prepare_types[(int)$stmt];
637 if (count($types) != count($data)) {
638 $tmp = $this->raiseError(DB_ERROR_MISMATCH);
643 foreach ($data as $key => $value) {
644 if ($types[$i] == DB_PARAM_MISC) {
646 * Oracle doesn't seem to have the ability to pass a
647 * parameter along unchanged, so strip off quotes from start
648 * and end, plus turn two single quotes to one single quote,
649 * in order to avoid the quotes getting escaped by
650 * Oracle and ending up in the database.
652 $data[$key] = preg_replace("/^'(.*)'$/", "\\1", $data[$key]);
653 $data[$key] = str_replace("''", "'", $data[$key]);
654 } elseif ($types[$i] == DB_PARAM_OPAQUE) {
655 $fp = @fopen($data[$key], 'rb');
657 $tmp = $this->raiseError(DB_ERROR_ACCESS_VIOLATION);
660 $data[$key] = fread($fp, filesize($data[$key]));
662 } elseif ($types[$i] == DB_PARAM_SCALAR) {
663 // Floats have to be converted to a locale-neutral
665 if (is_float($data[$key])) {
666 $data[$key] = $this->quoteFloat($data[$key]);
669 if (!@OCIBindByName($stmt, ':bind' . $i, $data[$key], -1)) {
670 $tmp = $this->oci8RaiseError($stmt);
673 $this->last_query = preg_replace("/:bind$i/",$this->quoteSmart($data[$key]),$this->last_query,1);
676 if ($this->autocommit) {
677 $success = @OCIExecute($stmt, OCI_COMMIT_ON_SUCCESS);
679 $success = @OCIExecute($stmt, OCI_DEFAULT);
682 $tmp = $this->oci8RaiseError($stmt);
685 $this->last_stmt = $stmt;
686 if ($this->manip_query[(int)$stmt] || $this->_next_query_manip) {
687 $this->_last_query_manip = true;
688 $this->_next_query_manip = false;
691 $this->_last_query_manip = false;
692 @ocisetprefetch($stmt, $this->options['result_buffering']);
693 $tmp = new DB_result($this, $stmt);
702 * Enables or disables automatic commits
704 * @param bool $onoff true turns it on, false turns it off
706 * @return int DB_OK on success. A DB_Error object if the driver
707 * doesn't support auto-committing transactions.
709 function autoCommit($onoff = false)
711 $this->autocommit = (bool)$onoff;;
719 * Commits the current transaction
721 * @return int DB_OK on success. A DB_Error object on failure.
725 $result = @OCICommit($this->connection);
727 return $this->oci8RaiseError();
736 * Reverts the current transaction
738 * @return int DB_OK on success. A DB_Error object on failure.
742 $result = @OCIRollback($this->connection);
744 return $this->oci8RaiseError();
750 // {{{ affectedRows()
753 * Determines the number of rows affected by a data maniuplation query
755 * 0 is returned for queries that don't manipulate data.
757 * @return int the number of rows. A DB_Error object on failure.
759 function affectedRows()
761 if ($this->last_stmt === false) {
762 return $this->oci8RaiseError();
764 $result = @OCIRowCount($this->last_stmt);
765 if ($result === false) {
766 return $this->oci8RaiseError($this->last_stmt);
775 * Changes a query string for various DBMS specific reasons
777 * "SELECT 2+2" must be "SELECT 2+2 FROM dual" in Oracle.
779 * @param string $query the query string to modify
781 * @return string the modified query string
785 function modifyQuery($query)
787 if (preg_match('/^\s*SELECT/i', $query) &&
788 !preg_match('/\sFROM\s/i', $query)) {
789 $query .= ' FROM dual';
795 // {{{ modifyLimitQuery()
798 * Adds LIMIT clauses to a query string according to current DBMS standards
800 * @param string $query the query to modify
801 * @param int $from the row to start to fetching (0 = the first row)
802 * @param int $count the numbers of rows to fetch
803 * @param mixed $params array, string or numeric data to be used in
804 * execution of the statement. Quantity of items
805 * passed must match quantity of placeholders in
806 * query: meaning 1 placeholder for non-array
807 * parameters or 1 placeholder per array element.
809 * @return string the query string with LIMIT clauses added
813 function modifyLimitQuery($query, $from, $count, $params = array())
815 // Let Oracle return the name of the columns instead of
816 // coding a "home" SQL parser
818 if (count($params)) {
819 $result = $this->prepare("SELECT * FROM ($query) "
820 . 'WHERE NULL = NULL');
821 $tmp = $this->execute($result, $params);
823 $q_fields = "SELECT * FROM ($query) WHERE NULL = NULL";
825 if (!$result = @OCIParse($this->connection, $q_fields)) {
826 $this->last_query = $q_fields;
827 return $this->oci8RaiseError();
829 if (!@OCIExecute($result, OCI_DEFAULT)) {
830 $this->last_query = $q_fields;
831 return $this->oci8RaiseError($result);
835 $ncols = OCINumCols($result);
837 for ( $i = 1; $i <= $ncols; $i++ ) {
838 $cols[] = '"' . OCIColumnName($result, $i) . '"';
840 $fields = implode(', ', $cols);
841 // XXX Test that (tip by John Lim)
842 //if (preg_match('/^\s*SELECT\s+/is', $query, $match)) {
843 // // Introduce the FIRST_ROWS Oracle query optimizer
844 // $query = substr($query, strlen($match[0]), strlen($query));
845 // $query = "SELECT /* +FIRST_ROWS */ " . $query;
848 // Construct the query
849 // more at: http://marc.theaimsgroup.com/?l=php-db&m=99831958101212&w=2
850 // Perhaps this could be optimized with the use of Unions
851 $query = "SELECT $fields FROM".
852 " (SELECT rownum as linenum, $fields FROM".
854 ' WHERE rownum <= '. ($from + $count) .
855 ') WHERE linenum >= ' . ++$from;
863 * Returns the next free id in a sequence
865 * @param string $seq_name name of the sequence
866 * @param boolean $ondemand when true, the seqence is automatically
867 * created if it does not exist
869 * @return int the next id number in the sequence.
870 * A DB_Error object on failure.
872 * @see DB_common::nextID(), DB_common::getSequenceName(),
873 * DB_oci8::createSequence(), DB_oci8::dropSequence()
875 function nextId($seq_name, $ondemand = true)
877 $seqname = $this->getSequenceName($seq_name);
880 $this->expectError(DB_ERROR_NOSUCHTABLE);
881 $result = $this->query("SELECT ${seqname}.nextval FROM dual");
883 if ($ondemand && DB::isError($result) &&
884 $result->getCode() == DB_ERROR_NOSUCHTABLE) {
886 $result = $this->createSequence($seq_name);
887 if (DB::isError($result)) {
888 return $this->raiseError($result);
894 if (DB::isError($result)) {
895 return $this->raiseError($result);
897 $arr = $result->fetchRow(DB_FETCHMODE_ORDERED);
902 * Creates a new sequence
904 * @param string $seq_name name of the new sequence
906 * @return int DB_OK on success. A DB_Error object on failure.
908 * @see DB_common::createSequence(), DB_common::getSequenceName(),
909 * DB_oci8::nextID(), DB_oci8::dropSequence()
911 function createSequence($seq_name)
913 return $this->query('CREATE SEQUENCE '
914 . $this->getSequenceName($seq_name));
918 // {{{ dropSequence()
923 * @param string $seq_name name of the sequence to be deleted
925 * @return int DB_OK on success. A DB_Error object on failure.
927 * @see DB_common::dropSequence(), DB_common::getSequenceName(),
928 * DB_oci8::nextID(), DB_oci8::createSequence()
930 function dropSequence($seq_name)
932 return $this->query('DROP SEQUENCE '
933 . $this->getSequenceName($seq_name));
937 // {{{ oci8RaiseError()
940 * Produces a DB_Error object regarding the current problem
942 * @param int $errno if the error is being manually raised pass a
943 * DB_ERROR* constant here. If this isn't passed
944 * the error information gathered from the DBMS.
946 * @return object the DB_Error object
948 * @see DB_common::raiseError(),
949 * DB_oci8::errorNative(), DB_oci8::errorCode()
951 function oci8RaiseError($errno = null)
953 if ($errno === null) {
954 $error = @OCIError($this->connection);
955 return $this->raiseError($this->errorCode($error['code']),
956 null, null, null, $error['message']);
957 } elseif (is_resource($errno)) {
958 $error = @OCIError($errno);
959 return $this->raiseError($this->errorCode($error['code']),
960 null, null, null, $error['message']);
962 return $this->raiseError($this->errorCode($errno));
969 * Gets the DBMS' native error code produced by the last query
971 * @return int the DBMS' error code. FALSE if the code could not be
974 function errorNative()
976 if (is_resource($this->last_stmt)) {
977 $error = @OCIError($this->last_stmt);
979 $error = @OCIError($this->connection);
981 if (is_array($error)) {
982 return $error['code'];
991 * Returns information about a table or a result set
993 * NOTE: only supports 'table' and 'flags' if <var>$result</var>
996 * NOTE: flags won't contain index information.
998 * @param object|string $result DB_result object from a query or a
999 * string containing the name of a table.
1000 * While this also accepts a query result
1001 * resource identifier, this behavior is
1003 * @param int $mode a valid tableInfo mode
1005 * @return array an associative array with the information requested.
1006 * A DB_Error object on failure.
1008 * @see DB_common::tableInfo()
1010 function tableInfo($result, $mode = null)
1012 if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
1013 $case_func = 'strtolower';
1015 $case_func = 'strval';
1020 if (is_string($result)) {
1022 * Probably received a table name.
1023 * Create a result resource identifier.
1025 $result = strtoupper($result);
1026 $q_fields = 'SELECT column_name, data_type, data_length, '
1028 . 'FROM user_tab_columns '
1029 . "WHERE table_name='$result' ORDER BY column_id";
1031 $this->last_query = $q_fields;
1033 if (!$stmt = @OCIParse($this->connection, $q_fields)) {
1034 return $this->oci8RaiseError(DB_ERROR_NEED_MORE_DATA);
1036 if (!@OCIExecute($stmt, OCI_DEFAULT)) {
1037 return $this->oci8RaiseError($stmt);
1041 while (@OCIFetch($stmt)) {
1043 'table' => $case_func($result),
1044 'name' => $case_func(@OCIResult($stmt, 1)),
1045 'type' => @OCIResult($stmt, 2),
1046 'len' => @OCIResult($stmt, 3),
1047 'flags' => (@OCIResult($stmt, 4) == 'N') ? 'not_null' : '',
1049 if ($mode & DB_TABLEINFO_ORDER) {
1050 $res['order'][$res[$i]['name']] = $i;
1052 if ($mode & DB_TABLEINFO_ORDERTABLE) {
1053 $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
1059 $res['num_fields'] = $i;
1061 @OCIFreeStatement($stmt);
1064 if (isset($result->result)) {
1066 * Probably received a result object.
1067 * Extract the result resource identifier.
1069 $result = $result->result;
1074 if ($result === $this->last_stmt) {
1075 $count = @OCINumCols($result);
1077 $res['num_fields'] = $count;
1079 for ($i = 0; $i < $count; $i++) {
1082 'name' => $case_func(@OCIColumnName($result, $i+1)),
1083 'type' => @OCIColumnType($result, $i+1),
1084 'len' => @OCIColumnSize($result, $i+1),
1087 if ($mode & DB_TABLEINFO_ORDER) {
1088 $res['order'][$res[$i]['name']] = $i;
1090 if ($mode & DB_TABLEINFO_ORDERTABLE) {
1091 $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
1095 return $this->raiseError(DB_ERROR_NOT_CAPABLE);
1102 // {{{ getSpecialQuery()
1105 * Obtains the query string needed for listing a given type of objects
1107 * @param string $type the kind of objects you want to retrieve
1109 * @return string the SQL query string or null if the driver doesn't
1110 * support the object type requested
1113 * @see DB_common::getListOf()
1115 function getSpecialQuery($type)
1119 return 'SELECT table_name FROM user_tables';
1121 return 'SELECT synonym_name FROM user_synonyms';
1123 return 'SELECT view_name FROM user_views';
1133 * Formats a float value for use within a query in a locale-independent
1136 * @param float the float value to be quoted.
1137 * @return string the quoted string.
1138 * @see DB_common::quoteSmart()
1139 * @since Method available since release 1.7.8.
1141 function quoteFloat($float) {
1142 return $this->escapeSimple(str_replace(',', '.', strval(floatval($float))));