original_string: public static function generateKey($txt, $length = null)
      {
  
          date_default_timezone_set('UTC');
  
          $possible = "2346789bcdfghjkmnpqrtvwxyzBCDFGHJKLMNPQRTVWXYZ";
  
          $maxlength = (empty($length) || (int)$length > strlen($possible)) ? strlen($possible) : (int)$length;
          $random = "";
  
          $i = 0;
  
          while ($i < ($maxlength / 5)) {
              // pick a random character from the possible ones
              $char = substr($possible, mt_rand(0, $maxlength - 1), 1);
              if (!strstr($random, $char)) {
                  $random .= $char;
                  $i++;
              }
          }
  
          $salt = time() . $random;
          $rand = mt_rand();
          $key = md5($rand . $txt . $salt);
  
          return $key;
      }
code: public static function generateKey($txt, $length = null)
      {
  
          date_default_timezone_set('UTC');
  
          $possible = "2346789bcdfghjkmnpqrtvwxyzBCDFGHJKLMNPQRTVWXYZ";
  
          $maxlength = (empty($length) || (int)$length > strlen($possible)) ? strlen($possible) : (int)$length;
          $random = "";
  
          $i = 0;
  
          while ($i < ($maxlength / 5)) {
              // pick a random character from the possible ones
              $char = substr($possible, mt_rand(0, $maxlength - 1), 1);
              if (!strstr($random, $char)) {
                  $random .= $char;
                  $i++;
              }
          }
  
          $salt = time() . $random;
          $rand = mt_rand();
          $key = md5($rand . $txt . $salt);
  
          return $key;
      }
code_tokens: public static function generateKey ( $ txt , $ length = null ) { date_default_timezone_set ( 'UTC' ) ; $ possible = "2346789bcdfghjkmnpqrtvwxyzBCDFGHJKLMNPQRTVWXYZ" ; $ maxlength = ( empty ( $ length ) || ( int ) $ length > strlen ( $ possible ) ) ? strlen ( $ possible ) : ( int ) $ length ; $ random = "" ; $ i = 0 ; while ( $ i < ( $ maxlength / 5 ) ) { // pick a random character from the possible ones $ char = substr ( $ possible , mt_rand ( 0 , $ maxlength - 1 ) , 1 ) ; if ( ! strstr ( $ random , $ char ) ) { $ random .= $ char ; $ i ++ ; } } $ salt = time ( ) . $ random ; $ rand = mt_rand ( ) ; $ key = md5 ( $ rand . $ txt . $ salt ) ; return $ key ; }
docstring: Generates a random encryption key
  
  @param string $txt
  @return string
docstring_tokens: Generates a random encryption key