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5 years ago 评论 观察者模式（Observer）$storage = new \SplObjectStorage(); $a = new class {private $a='a';}; $storage->attach($a); $s...
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User for 5 years
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5 years ago 评论 观察者模式（Observer）$storage = new \SplObjectStorage(); $a = new class {private $a='a';}; $storage->attach($a); $s...