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run code in 300+ PHP versions simultaneously
<?php class X {} function test(int $number = null)?X { return null; } echo test();
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16, 7.0.0
Parse error: syntax error, unexpected '?', expecting '{' in /in/UtSsF on line 4
Process exited with code 255.
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163.26 ms | 1395 KiB | 24 Q