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run code in 300+ PHP versions simultaneously
<?php $foo = "test"; var_dump($foo[0] ?? "default"); var_dump($foo[5] ?? "default"); var_dump(isset($foo[5]) ? $foo[5] : "default");
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.22, 8.1.0 - 8.1.9
string(1) "t" string(7) "default" string(7) "default"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/lsoFA on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '?' in /in/lsoFA on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/lsoFA on line 5
Process exited with code 255.

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