--TEST-- ob_start with comma delimited strings --FILE-- id = $id; } static function g($string) { static $i=0; $i++; $len = strlen($string); return "C::g[call:$i; len:$len] - $string\n"; } } function checkAndClean() { print_r(ob_list_handlers()); while (ob_get_level()>0) { ob_end_flush(); } } echo "\n ---> Test comma delimited strings: \n"; var_dump(ob_start("f")); checkAndClean(); var_dump(ob_start("f,f")); checkAndClean(); var_dump(ob_start("f,C::g,f,C::g")); checkAndClean(); ?> --EXPECTF-- ---> Test comma delimited strings: f[call:1; len:34] - bool(true) Array ( [0] => f ) f[call:3; len:68] - f[call:2; len:47] - bool(true) Array ( [0] => f [1] => f ) f[call:5; len:150] - C::g[call:2; len:125] - f[call:4; len:103] - C::g[call:1; len:79] - bool(true) Array ( [0] => f [1] => C::g [2] => f [3] => C::g )