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<?php class Test { public static $x = 0; } class Test2 extends Test { // $x is inherited } class Test3 extends Test { // $x is NOT inherited public static $x = 3; } $x = 1; Test2::$x = &$x; var_dump(Test::$x, Test2::$x, Test3::$x); // int(1), int(1), int(3) ?>
Output for git.master, git.master_jit
int(1) int(1) int(3)

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