PHP Free Memory Solution

PHP free Memory
PHP is released when running the program, clear memory

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If you read several G files into memory, don't blame it.
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You can use unset,
The memory may be reclaimed by the GC (in the absence of a variable reference:

After a PHP program executes, the memory is automatically freed.

This I know, but my program has not been executed, he on the memory burst, I was asked, what method can be executed in the program to clear the memory, please which expert guidance, do not understand the

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The unset variable frees up memory.
Memory usage too much, is not your foreach loop writing a problem? Check the optimization code.
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Optimize the code.

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