What is the syntax for multiple arguments in PHP?

Question

A simple question:

What is the syntax for creating a function with unlimited* arguments in PHP?

Example (ActionScript 3):

function multiTrace(...arguments):void
{
    var i:String;
    for each(i in arguments)
        trace(i);
}

The goal is to have a function that I can call and list any given amount of stylesheets within, eg:

$avian->insertStyles("overall.css", "home.css");

*Subject to obvious limitations (RAM, etc).

@Bing Cheers - had a quick search before I asked but this didn't come up. — Marty
– Marty, Commented Jun 20, 2011 at 9:18

Peter Kruithof · Accepted Answer · 2011-06-20 09:16:05Z

7

function multiTrace() 
{
    $args = func_get_args();
    while ($arg = array_shift($args)) {
        echo $arg; 
    }
}

see: http://php.net/manual/en/function.func-get-args.php

answered Jun 20, 2011 at 9:16

Peter Kruithof

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5 Comments

Yoshi Over a year ago

@Peter Kruithof Also just an example, the while loop is a bit problematic. Think of what happens if one of the given parameters is 0 or false (or anything which can be cast to boolean false.)

binaryLV Over a year ago

Marty, you should accept an answer, if it answers your question :) You might also want to look at func_num_args() and func_get_arg(), though func_get_args() seems to be the one that's used in most cases. You might also be interested in default argument values, e.g., function getUerName($userID = null) { }.

binaryLV Over a year ago

@Yoshi, good point. I would use foreach ( $args as $arg ) { }.

Yoshi Over a year ago

@binaryLV @Peter Kruithof Yes, if a loop is need that's what I'd use, too.

Marty Over a year ago

@binaryLV There's a minimum time applied to answer acceptance - I know how to use SO. Also, thanks for the additional links.

Rene Terstegen · Accepted Answer · 2011-08-25 09:36:46Z

3

See

http://nl.php.net/manual/en/function.func-get-args.php

function testfunction() {
    $arguments = func_get_args();

    var_dump($arguments);
}

testfunction("argument1", "argument2");

Result:

array
  0 => string 'argument1' (length=9)
  1 => string 'argument2' (length=9)

edited Aug 25, 2011 at 9:36

answered Jun 20, 2011 at 9:15

Rene Terstegen

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Comments

Dan · Accepted Answer · 2011-06-20 09:15:31Z

1

I think you are after the func_get_args function:
http://php.net/manual/en/function.func-get-args.php

answered Jun 20, 2011 at 9:15

Dan

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