3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'foo'; var_dump($a['bar']); var_dump(empty($a['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/WDLHN:4 Stack trace: #0 {main} thrown in /in/WDLHN on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Warning: Illegal string offset 'bar' in /in/WDLHN on line 4 string(1) "f" bool(true)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.3 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
string(1) "f" bool(false)
Output for 5.0.0 - 5.0.2
string(1) "f" bool(true)

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207.69 ms | 401 KiB | 312 Q