The difference between passing parameters and passing addresses in PHP_PHP Tutorial

The difference between value-passing and address-passing in PHP parameter

　The difference between value-passing and address-passing in PHP parameter passing

This article mainly introduces the difference between value-passing and address-passing in PHP parameter passing. It is very simple. You can understand it through a simple comparison with examples. Friends in need can refer to it.

Without further ado, let’s look at some code first

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

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$test = "hello"; function myFun(&$val){ $val = "hello world"; return $val; } echo myFun(&$test); //hello world echo $test; //hello world

function test(&val){

return $val; }

Why is & used to pass parameters? What are the benefits? Passing by address means allowing changes within the function, such as: 　?

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$test = "hello"; function myFun(&$val){ $val = "hello world"; return $val; } echo myFun(&$test); //hello world echo $test; //hello world

The above is the entire content of this article, I hope you all like it. http://www.bkjia.com/PHPjc/989554.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/989554.htmlTechArticleThe difference between value-passing and address-passing in PHP parameter-passing. The difference between value-passing and address-passing in PHP parameter passing. The article mainly introduces the difference between passing parameters in PHP by value and passing by address. It is very simple. You can simply use examples...