The difference between passing parameters in PHP by value and passing address, passing parameters in php_PHP tutorial

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

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

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

Why is & used to pass parameters? What are the benefits?

Passing by address means allowing changes within the function, for example:

$test = "hello";
function myFun(&$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/989569.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/989569.htmlTechArticleThe difference between value-passing and address-passing in PHP parameter passing. Not much nonsense about PHP parameter passing. Let’s look at the paragraph first. Code function test(} Why is function myFun(return $val;}echo myFun( //hello worldecho...