3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = <<<'DATA' $program = <<<PROGRAM <?php \$data = <<<'DATA'\n$data\nDATA; $data PROGRAM; $n = 0; if ($n >= 5) { echo "OMFG!\n"; } else { echo str_replace('$n = 0;', '$n = '.($n+1).';', $program); } DATA; $program = <<<PROGRAM <?php \$data = <<<'DATA'\n$data\nDATA; $data PROGRAM; $n = 0; if ($n >= 5) { echo "OMFG!\n"; } else { echo str_replace('$n = 0;', '$n = '.($n+1).';', $program); }

preferences:
38.46 ms | 402 KiB | 5 Q