3v4l.org

run code in 300+ PHP versions simultaneously
<?php $vars=array( '^hello', 123, false, 1.23, ); foreach($vars as $var) { echo $var, ' => ', (($var[0]=='^') ? substr($var,1) : 'false'), PHP_EOL; }

preferences:
40.53 ms | 402 KiB | 5 Q