gc_disable 会关闭循环引用收集器，但gc 不是基于引用技数的么，这是不是意味着垃圾回收机制的关闭?-PHP Tutorial-php.cn

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gc_disable 会关闭循环引用收集器，但gc 不是基于引用技数的么，这是不是意味着垃圾回收机制的关闭?

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Jun 06, 2016 pm 08:39 PM

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如果是，那在 gc_disable 的情况下如何进行 PHP 的内存管理呢？

回复内容：

如果是，那在 gc_disable 的情况下如何进行 PHP 的内存管理呢？

循环引用计数收集器只是GC的一种，是5.3以后的版本才引入的

在5.2及之前的版本中，并不是没有gc，而是只有基于引用计数的基础gc，注意这两个名词的区别

循环引用计数收集器在对象或者array很多的时候会影响脚本执行效率，所以在你确定你的脚本不会产生循环引用的情况下，可以调用gc_disable强制关闭以提升性能，但不代表整个垃圾回收机制被关闭了

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