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PHP传参之传值与传址的区别_PHP

WBOY
WBOYOriginal
2016-05-30 15:09:17755browse

废话不多说,先来看段代码

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:

$test = "hello";
function myFun(&$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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