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run code in 300+ PHP versions simultaneously
<?php namespace B { class C { public static function f() { echo '1' . ' - ' . __CLASS__ . "\n"; } } C::f(); } namespace A\B { class C { public static function f() { echo '2' . ' - ' . __CLASS__ . "\n"; } } C::f(); } namespace A { B\C::f(); \B\C::f(); //A\B\C::f(); \A\B\C::f(); $s = 'B\C::f'; call_user_func($s); $s = '\B\C::f'; call_user_func($s); $s = 'A\B\C::f'; call_user_func($s); $s = '\A\B\C::f'; call_user_func($s); }
Output for git.master, git.master_jit, rfc.property-hooks
1 - B\C 2 - A\B\C 2 - A\B\C 1 - B\C 2 - A\B\C 1 - B\C 1 - B\C 2 - A\B\C 2 - A\B\C

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