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实例详解php中的return语句

Jun 13, 2016 pm 12:42 PM
php return

这篇文章主要介绍了php中的return语句 ,有一定的参考价值,感兴趣的朋友可以看看, 希望对你哟所帮助!

一个函数中可以有return语句,也可以没有。什么时候需要呢?就是当你想接收函数的执行结果的时候,你需要一个return 语句。

函数执行完return语句之后,return语句后面的代码是永远不会得到执行的。

PHP中的return一般情况下只能通过return获得一个返回值,如果想获得多个返回值,可以返回一个数组。

1 <?php2 3 function sayHello($a,$b)4 {5     return $a;6     return $b;7 }8 9 ?>
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想通过两个return语句获得两个返回值,但结果是只能返回a的值。

下图展示了一个用return返回数组的例子。

sayHello函数通过return返回一个数组,用变量temp来接收这个数组,再通过foreach循环输出返回的值。

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