The garbage collection mechanism of PHP can recycle garbage, which garbage collection is not recyclable

PHP's garbage collection mechanism is very important in any development language, and PHP's garbage collection mechanism allows developers to avoid memory leaks as much as possible during the development process, and to automatically reclaim variables by reference counting, but there are still memory leaks in certain, long-time scripts.

Basic principles and FAQs can be found in the official documentation, marked here to avoid omissions: http://php.net/manual/zh/features.gc.refcounting-basics.php

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The above describes the PHP garbage collection mechanism, including garbage collection, PHP content, I hope that the PHP tutorial interested in a friend helpful.

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