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This article is about how to use the unset() function in PHP. Xiaobian thinks it is quite practical, so share it with everyone for reference. Let's follow Xiaobian and have a look.

unset():

Delete or destroy variables

//unset(): destroy variable $name = 'qingyu';unset($name); //not only can delete variable, but also delete a value echo $name in array; //error if(isset($name)){ echo 'variable exists';}else{ echo 'variable does not exist';} Thank you for reading! About "how to use the unset() function in php" this article is shared here, I hope the above content can be of some help to everyone, so that everyone can learn more knowledge, if you think the article is good, you can share it to let more people see it!

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