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PHP传参之传值与传址的区别

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Release: 2016-06-13 09:06:09
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PHP传参之传值与传址的区别

   PHP传参之传值与传址的区别

        这篇文章主要介绍了PHP传参之传值与传址的区别,十分的简单,大家通过实例简单对比下就明白了,有需要的小伙伴可以参考下。

  废话不多说,先来看段代码

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function test(&val){

return $val;

}

  其中为什么用到&进行传参呢,有什么好处?

  传址是允许在函数内部进行改变的意思,比如:

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$test = "hello";

function myFun(&$val){

$val = "hello world";

return $val;

}

echo myFun(&$test); //hello world

echo $test; //hello world

  以上所述就是本文的全部内容了,希望大家能够喜欢。

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