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run code in 300+ PHP versions simultaneously
<?php namespace { define('SOME_CONSTANT', 1); } namespace Some\Name\Space { use ReflectionFunction; $reflection = new ReflectionFunction(function ($const = PHP_EOL, $const2 = SOME_CONSTANT) { }); echo $reflection->getParameters()[0]->getDefaultValueConstantName() . PHP_EOL; echo $reflection->getParameters()[1]->getDefaultValueConstantName() . PHP_EOL; }
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.0.27, 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 - 8.0.23, 8.1.0 - 8.1.10
Some\Name\Space\PHP_EOL Some\Name\Space\SOME_CONSTANT

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54.39 ms | 410 KiB | 5 Q