What is the way to destroy variables in php

How to destroy variables in php: We can use the unset() function to destroy a given variable. Specific usage methods are: [unset($foo)], which means a single variable is to be destroyed; [unset($foo1, $foo2, $foo3)], which means multiple variables are to be destroyed.

#You can use the unset() function to destroy a given variable.

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Note: This function has no return value.

Syntax:

void unset ( mixed $var [, mixed $... ] )

Parameters:

• $var: Variable to be destroyed

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Example:

<?php
// 销毁单个变量
unset ($foo); 
// 销毁单个数组元素
unset ($bar[&#39;quux&#39;]); 
// 销毁一个以上的变量
unset($foo1, $foo2, $foo3);
?>

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