3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo { class Bar {} } namespace Foo\Legacy { class Bar extends \Foo\Bar {} } namespace { class_alias("\Foo\Bar", "\Foo\Alias\Bar"); $b = new \Foo\Alias\Bar; var_dump(serialize(new \Foo\Alias\Bar)); var_dump(serialize(new \Foo\Legacy\Bar)); }

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34.03 ms | 402 KiB | 5 Q