3v4l.org

run code in 500+ PHP versions simultaneously
<?php $test = 'array string access'; var_dump($test[0], isset($test[0]), $test === '');
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
string(1) "a" bool(true) bool(false)
preferences:
81.31 ms | 1126 KiB | 4 Q