3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = array('bar'); var_dump($foo[0]['book']['bar']);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/7nPEc:2 Stack trace: #0 {main} thrown in /in/7nPEc on line 2
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Illegal string offset 'book' in /in/7nPEc on line 2 Warning: Illegal string offset 'bar' in /in/7nPEc on line 2 string(1) "b"
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29
Fatal error: Cannot use string offset as an array in /in/7nPEc on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
<br /> <b>Fatal error</b>: Cannot use string offset as an array in <b>/in/7nPEc</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
NULL

preferences:
312.05 ms | 401 KiB | 460 Q