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run code in 300+ PHP versions simultaneously
<?php namespace { function FUNC() { return __NAMESPACE__; } $closure = function () { var_dump(FUNC()); }; $closure = $closure->bindTo(null, 'Foo\\Scope'); $closure(); $closure = $closure->bindTo(null, 'Bar\\Scope'); $closure(); } namespace Foo { function FUNC() { return __NAMESPACE__; } class Scope {} } namespace Bar { function FUNC() { return __NAMESPACE__; } class Scope {} }

preferences:
38.14 ms | 402 KiB | 5 Q