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   1  <?php
   2  //=============================================================================
   3  /**
   4  * @copyright Francois Laupretre <phool@tekwire.net>
   5  * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, V 2.0
   6  * @category phool
   7  * @package phool
   8  */
   9  //============================================================================
  10  
  11  namespace Phool;
  12  
  13  class Util
  14  {
  15  
  16  //---------
  17  
  18  public static function envIsWeb()
  19  {
  20  return (php_sapi_name()!='cli');
  21  }
  22  
  23  //----
  24  
  25  public static function envIsWindows()
  26  {
  27  return (substr(PHP_OS, 0, 3) == 'WIN');
  28  }
  29  
  30  //---------
  31  // Adapted from PEAR
  32  
  33  public static function loadExtension($ext)
  34  {
  35  if (extension_loaded($ext)) return;
  36  
  37  if (PHP_OS == 'AIX') $suffix = 'a';
  38  else $suffix = PHP_SHLIB_SUFFIX;
  39  
  40  @dl('php_'.$ext.'.'.$suffix) || @dl($ext.'.'.$suffix);
  41  
  42  if (!extension_loaded($ext)) throw new \Exception("$ext: Cannot load extension");
  43  }
  44  
  45  //---------
  46  // Require several extensions. Allows to list every extensions that are not
  47  // present.
  48  
  49  public static function loadExtensions($ext_list)
  50  {
  51  $failed_ext=array();
  52  foreach($ext_list as $ext)
  53      {
  54      try { self::loadExtension($ext); }
  55      catch (\Exception $e) { $failed_ext[]=$ext; }
  56      }
  57  if (count($failed_ext))
  58      throw new \Exception('Cannot load the following required extension(s): '
  59          .implode(' ',$failed_ext));
  60  }
  61  
  62  //---------
  63  // Replacement for substr()
  64  // Difference : returns '' instead of false (when index out of range)
  65  
  66  public static function substr($buf,$position,$len=NULL)
  67  {
  68  $str=is_null($len) ? substr($buf,$position) : substr($buf,$position,$len);
  69  if ($str===false) $str='';
  70  return $str;
  71  }
  72  
  73  //---------
  74  // This function must be called before every file access
  75  // In PHP 6, magic_quotes_runtime is suppressed and set_magic_quotes_runtime()
  76  // does not exist any more.
  77  
  78  private static $mqr_exists=null;
  79  private static $mqr_level=0;
  80  private static $mqr_save;
  81  
  82  public static function disableMQR()
  83  {
  84  if (is_null(self::$mqr_exists))
  85      self::$mqr_exists=function_exists('set_magic_quotes_runtime');
  86  
  87  if (!self::$mqr_exists) return;
  88  
  89  if (self::$mqr_level==0)
  90      {
  91      self::$mqr_save=get_magic_quotes_runtime();
  92      set_magic_quotes_runtime(0);
  93      }
  94  self::$mqr_level++;
  95  }
  96  
  97  //---------
  98  // This function must be called after every file access
  99  
 100  public static function restoreMQR()
 101  {
 102  if (is_null(self::$mqr_exists))
 103      self::$mqr_exists=function_exists('set_magic_quotes_runtime');
 104  
 105  if (!self::$mqr_exists) return;
 106  
 107  self::$mqr_level--;
 108  if (self::$mqr_level==0) set_magic_quotes_runtime(self::$mqr_save);
 109  }
 110  
 111  //---------
 112  
 113  public static function mkArray($data)
 114  {
 115  if (is_null($data)) return array();
 116  if (!is_array($data)) $data=array($data);
 117  return $data;
 118  }
 119  
 120  //---------------------------------
 121  
 122  public static function callMethod($object,$method,$args)
 123  {
 124  return call_user_func_array(array($object,$method),$args);
 125  }
 126  
 127  //----------
 128  } // End of class
 129  //=============================================================================
 130  ?>