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PHP传参之传值与传址的区别

PHPz
Release: 2018-10-09 17:01:34
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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

function test(&val){
return $val;
}
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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:

$test = "hello";
function myFun(&$val){
$val = "hello world";
return $val;
}
echo myFun(&$test); //hello world
echo $test;         //hello world
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 更多相关教程请访问 php编程从入门到精通全套视频教程

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source:jb51.net
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