src/Core/Config/Adapter/AbstractDbaConfigAdapter.php

   1 <?php
   2
   3 namespace Friendica\Core\Config\Adapter;
   4
   5 use Friendica\Database\DBA;
   6
   7 abstract class AbstractDbaConfigAdapter
   8 {
   9         /**
  10          * The connection state of the adapter
  11          *
  12          * @var bool
  13          */
  14         protected $connected = true;
  15
  16         public function __construct()
  17         {
  18                 $this->connected = DBA::connected();
  19         }
  20
  21         /**
  22          * Checks if the adapter is currently connected
  23          *
  24          * @return bool
  25          */
  26         public function isConnected()
  27         {
  28                 return $this->connected;
  29         }
  30
  31         /**
  32          * Formats a DB value to a config value
  33          * - null   = The db-value isn't set
  34          * - bool   = The db-value is either '0' or '1'
  35          * - array  = The db-value is a serialized array
  36          * - string = The db-value is a string
  37          *
  38          * Keep in mind that there aren't any numeric/integer config values in the database
  39          *
  40          * @param null|string $value
  41          *
  42          * @return null|array|string
  43          */
  44         protected function toConfigValue($value)
  45         {
  46                 if (!isset($value)) {
  47                         return null;
  48                 }
  49
  50                 switch (true) {
  51                         // manage array value
  52                         case preg_match("|^a:[0-9]+:{.*}$|s", $value):
  53                                 return unserialize($value);
  54
  55                         default:
  56                                 return $value;
  57                 }
  58         }
  59
  60         /**
  61          * Formats a config value to a DB value (string)
  62          *
  63          * @param mixed $value
  64          *
  65          * @return string
  66          */
  67         protected function toDbValue($value)
  68         {
  69                 // if not set, save an empty string
  70                 if (!isset($value)) {
  71                         return '';
  72                 }
  73
  74                 switch (true) {
  75                         // manage arrays
  76                         case is_array($value):
  77                                 return serialize($value);
  78
  79                         default:
  80                                 return (string)$value;
  81                 }
  82         }
  83 }