[Summary view] [Print] [Text view]

   1  <?php
   2  
   3  /**
   4   * compatibility functions
   5   *
   6   * This file contains a few functions that might be missing from the PHP build
   7   */
   8  
   9  if (!function_exists('ctype_space')) {
  10      /**
  11       * Check for whitespace character(s)
  12       *
  13       * @param string $text
  14       * @return bool
  15       * @see ctype_space
  16       */
  17      function ctype_space($text)
  18      {
  19          if (!is_string($text)) return false; #FIXME original treats between -128 and 255 inclusive as ASCII chars
  20          if (trim($text) === '') return true;
  21          return false;
  22      }
  23  }
  24  
  25  if (!function_exists('ctype_digit')) {
  26      /**
  27       * Check for numeric character(s)
  28       *
  29       * @param string $text
  30       * @return bool
  31       * @see ctype_digit
  32       */
  33      function ctype_digit($text)
  34      {
  35          if (!is_string($text)) return false; #FIXME original treats between -128 and 255 inclusive as ASCII chars
  36          if (preg_match('/^\d+$/', $text)) return true;
  37          return false;
  38      }
  39  }
  40  
  41  if (!function_exists('gzopen') && function_exists('gzopen64')) {
  42      /**
  43       * work around for PHP compiled against certain zlib versions #865
  44       *
  45       * @link http://stackoverflow.com/questions/23417519/php-zlib-gzopen-not-exists
  46       *
  47       * @param string $filename
  48       * @param string $mode
  49       * @param int $use_include_path
  50       * @return mixed
  51       */
  52      function gzopen($filename, $mode, $use_include_path = 0)
  53      {
  54          return gzopen64($filename, $mode, $use_include_path);
  55      }
  56  }
  57  
  58  if (!function_exists('gzseek') && function_exists('gzseek64')) {
  59      /**
  60       * work around for PHP compiled against certain zlib versions #865
  61       *
  62       * @link http://stackoverflow.com/questions/23417519/php-zlib-gzopen-not-exists
  63       *
  64       * @param resource $zp
  65       * @param int $offset
  66       * @param int $whence
  67       * @return int
  68       */
  69      function gzseek($zp, $offset, $whence = SEEK_SET)
  70      {
  71          return gzseek64($zp, $offset, $whence);
  72      }
  73  }
  74  
  75  if (!function_exists('gztell') && function_exists('gztell64')) {
  76      /**
  77       * work around for PHP compiled against certain zlib versions #865
  78       *
  79       * @link   http://stackoverflow.com/questions/23417519/php-zlib-gzopen-not-exists
  80       *
  81       * @param resource $zp
  82       * @return int
  83       */
  84      function gztell($zp)
  85      {
  86          return gztell64($zp);
  87      }
  88  }
  89  
  90  /**
  91   * polyfill for PHP < 8
  92   * @see https://www.php.net/manual/en/function.str-starts-with
  93   */
  94  if (!function_exists('str_starts_with')) {
  95      function str_starts_with(string $haystack, string $needle)
  96      {
  97          return empty($needle) || strpos($haystack, $needle) === 0;
  98      }
  99  }
 100  
 101  /**
 102   * polyfill for PHP < 8
 103   * @see https://www.php.net/manual/en/function.str-contains
 104   */
 105  if (!function_exists('str_contains')) {
 106      function str_contains(string $haystack, string $needle)
 107      {
 108          return empty($needle) || strpos($haystack, $needle) !== false;
 109      }
 110  }
 111  
 112  /**
 113   * polyfill for PHP < 8
 114   * @see https://www.php.net/manual/en/function.str-ends-with
 115   */
 116  if (!function_exists('str_ends_with')) {
 117      function str_ends_with(string $haystack, string $needle)
 118      {
 119          return empty($needle) || substr($haystack, -strlen($needle)) === $needle;
 120      }
 121  }
 122  
 123  /**
 124   * polyfill for PHP < 8.1
 125   * @see https://www.php.net/manual/en/function.array-is-list
 126   */
 127  if (!function_exists('array_is_list')) {
 128      function array_is_list(array $arr)
 129      {
 130          if ($arr === []) {
 131              return true;
 132          }
 133          return array_keys($arr) === range(0, count($arr) - 1);
 134      }
 135  }