/**

 * UTF8::stristr

 */

function _stristr($str, $search)

	if (UTF8::is_ascii($str) AND UTF8::is_ascii($search))

		return stristr($str, $search);

	 * from the first occurrence of needle to the end. This is a UTF8-aware

	 * version of [stristr](http://php.net/stristr).

	 *

	 *     $found = UTF8::stristr($str, $search);

	 */

	public static function stristr($str, $search)

		return _stristr($str, $search);