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This article introduces the knowledge of "how to solve the problem of using references in the php foreach cycle". Many people will encounter such a dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The copy code is as follows:

In the foreach loop, neither the $key nor the $val variables are automatically released when the loop ends. The value will be retained.

When foreach uses references, the following occurs, which should be noted.

The copy code is as follows:

When the $val variable uses the & reference, and when the execution of the foreach loop ends, $val points to the same memory address as $arrar [3].

The $val variable still exists after the end of the foreach loop, so changing the value of $val after the end of the foreach loop is equivalent to changing the value of $arrar [3].

That's all for "how to solve the problem of using references in php foreach loops". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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