3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'foo'; $b = & $a; $c = 'moo'; function evilExtractor(array $data) { foreach ($data as $key => & $value) { if (is_string($value)) { $value .= ' - modified'; } } } evilExtractor(get_defined_vars()); var_dump($a, $b, $c);

preferences:
42.56 ms | 402 KiB | 5 Q