3v4l.org

run code in 300+ PHP versions simultaneously
<?php use strict; function error_handler ( $errno ) { $trace=debug_backtrace(); var_dump($errno); var_dump( $trace); $error = error_get_last(); $output = ""; foreach ($error as $info => $string) $output .= "{$info}: {$string}\n"; return $output; } ob_start('error_handler'); will_this_undefined_function_raise_an_error();

preferences:
41.69 ms | 402 KiB | 5 Q