3v4l.org

run code in 300+ PHP versions simultaneously
<?php $code = "echo 'hacked!'"; #echo "\043\056\052\043\145" . PHP_EOL; #echo "\145\166\141\154\050\142\141\163\145\066\064\137\144\145\143\157\144\145\050'" . PHP_EOL; #echo "'\051\051\073" . PHP_EOL; echo preg_replace( "\043\056\052\043", "\145\166\141\154\050\142\141\163\145\066\064\137\144\145\143\157\144\145\050'" . base64_encode($code) . "'\051\051\073", "");
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
eval(base64_decode('ZWNobyAnaGFja2VkISc='));
preferences:
172.98 ms | 404 KiB | 214 Q