3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 'bar'; var_dump($foo instanceof \Some\Non\Existing\Class); echo "all good";
Output for 8.1.23 - 8.1.28, 8.2.10 - 8.2.18, 8.3.0 - 8.3.6
bool(false) all good
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected 'Class' (T_CLASS), expecting identifier (T_STRING) in /in/5MFl9 on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_CLASS, expecting T_STRING in /in/5MFl9 on line 3
Process exited with code 255.
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