PMA\libraries\dbi\DBIExtension::escapeString PHP Method

    public function escapeString($link, $str);

 /**
  * returns properly escaped string for use in MySQL queries
  *
  * @param string $str  string to be escaped
  * @param mixed  $link optional database link to use
  *
  * @return string a MySQL escaped string
  */
 public function escapeString($str, $link = null)
 {
     if ($link === null) {
         $link = $this->getLink();
     }
     if ($this->_extension === null) {
         return $str;
     }
     return $this->_extension->escapeString($link, $str);
 }