--TEST-- mb_ereg_replace_callback() --SKIPIF-- <?php extension_loaded('mbstring') or die('skip mbstring not available'); function_exists('mb_ereg_replace_callback') or die("skip mb_ereg_replace_callback() is not available in this build"); ?> --FILE-- <?php $str = 'abc 123 #",; $foo'; echo mb_ereg_replace_callback('(\S+)', function($m){return $m[1].'('.strlen($m[1]).')';}, $str); ?> --EXPECT-- abc(3) 123(3) #",;(4) $foo(4)