3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo; use Non\Existing\NamespaceClass; class Bar { public function __construct() { echo NamespaceClass::class; } } new \Foo\Bar();
Output for 7.1.26 - 7.1.33, 7.2.17 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Non\Existing\NamespaceClass

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110.18 ms | 1410 KiB | 4 Q