3v4l.org

run code in 300+ PHP versions simultaneously
<?php header('Content-Type: text/plain'); $source = 'Hello World!'; $gz = addslashes(gzdeflate($source,9)); $a = "\$var='"; $b = "'; echo gzinflate(stripslashes(\$var));"; echo $a.$gz.$b, "\n"; eval($a.$gz.$b);

preferences:
43.51 ms | 402 KiB | 5 Q