3v4l.org

run code in 300+ PHP versions simultaneously
<?php $integer = 5; $integer += 10; echo $integer , "\n---\n"; $array = ['good' => 'one']; $array += ['two']; var_export($array);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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
15 --- array ( 'good' => 'one', 0 => 'two', )
preferences:
115.83 ms | 408 KiB | 5 Q