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<?php class Ancestor { protected $val = 'ancestor'; } class Child1 extends Ancestor { function __construct() { $this->val = 'child1'; } } class Child2 extends Ancestor { function output(Ancestor $subject) { $subject->val = 'surprise motherfucker'; echo $subject->val, "\n"; } } $child1 = new Child1(); $child2 = new Child2(); $child2->output($child1); // Output: child1
Output for git.master, git.master_jit, rfc.property-hooks
surprise motherfucker

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