一个PHP函数可以接受的参数的数量限制? [英] Can a PHP function accept an unlimited number of parameters?
问题描述
在PHP中有像功能未设置()
支持我们扔他们的任何数量的参数。
In PHP there are functions like unset()
that support any number of parameter we throw at them.
我想创建一个类似的功能,能够接受任何数量的参数和处理这一切。
I want to create a similar function that is capable of accepting any number of parameters and process them all.
任何想法,如何做到这一点?
Any idea, how to do this?
推荐答案
在PHP中,使用功能 func_get_args
来获取所有传递的参数。
In PHP, use the function func_get_args
to get all passed arguments.
<?php
function myfunc(){
$args = func_get_args();
foreach ($args as $arg)
echo $arg."/n";
}
myfunc('hello', 'world', '.');
?>
另一种方法是一个数组变量传递给你的函数,所以你不要有类似的事情 $ ARG [2]工作;
,而是可以使用的$ args ['MYVAR'];
或rewmember传递什么样的顺序事情,也是无限扩展的,这意味着你可以添加新的变量后,无需更改你已经已经codeD。
An alternative is to pass an array of variables to your function, so you don't have to work with things like $arg[2];
and instead can use $args['myvar'];
or rewmember what order things are passed in. It is also infinitely expandable which means you can add new variables later without having to change what you've already coded.
<?php
function myfunc($args){
while(list($var, $value)=each($args))
echo $var.' '.$value."/n";
}
myfunc(array('first'=>'hello', 'second'=>'world', '.'));
?>
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