3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['foo' => 1]; $toto = $arr['bar'] ?? 'baz'; echo $toto; $toto = $arr['bar'] ?: null; echo $toto;
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
baz Warning: Undefined array key "bar" in /in/OcANX on line 8
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
baz Notice: Undefined index: bar in /in/OcANX on line 8
Output for 7.3.32 - 7.3.33
baz
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Parse error: syntax error, unexpected '?' in /in/OcANX on line 5
Process exited with code 255.
preferences:
264.15 ms | 402 KiB | 294 Q