3v4l.org

run code in 300+ PHP versions simultaneously
<?php function get_string() { return 'foo'; } if (($string = get_string()) && 1 == TRUE) { var_dump($string); }
Output for 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
string(3) "foo"
preferences:
167.68 ms | 404 KiB | 235 Q