Which cases the PHP variable is destroyed

For example, the function method will be destroyed after execution, what other?

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For example, the function method will be destroyed after execution, what other?

PHP is garbage collected by reference counting, which is triggered automatically when certain conditions are reached, or it can be triggered manually. Of course, you can also prohibit garbage collection, as the request is cleaned up after it is finished.

About garbage collection You can read the manual: Http://php.net/manual/zh/feat ...

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