3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = 'world'; $here = <<<HEREDOC Hello $var HEREDOC; $now = <<<'NOWDOC' Hello $var NOWDOC; var_dump($here, $now);
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
string(11) "Hello world" string(10) "Hello $var"
preferences:
138.45 ms | 407 KiB | 5 Q