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PHP静态变量static的示范代码演示

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Release： 2016-06-13 11:00:37
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PHP静态变量static的示例代码演示

　　在PHP中的变量范围里，有一个非常重要的变量—PHP静态变量static。在接下来的这篇文章中，我们将会以具体的代码示例为大家详细介绍有关PHP静态变量static的主要用法，希望对大家有所帮助。

　　看看下面的例子：

　　例子 演示需要PHP静态变量static的例子

　　

　　本函数没什么用处，因为每次调用时都会将 $w3sky 的值设为 0 并输出 "0"。将变量加一的 $w3sky++ 没有作用，因为一旦退出本函数则变量 $w3sky 就不存在了。要写一个不会丢失本次计数值的计数函数，要将变量 $w3sky 定义为静态的：

　　例子 使用PHP静态变量static的例子

　　

　　现在，每次调用 Test() 函数都会输出 $w3sky 的值并加一。

Related labels：
function php Sky static test
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