CODEWITHSUNDEEP
phpfunction
sudeep cv
sudeep cv

Reputation: 1027

Multiple optional argument in a function

getAllForms($data=null)

getAllForms() and getAllForms("data")

This will work. But I want to make two optional argument in a function like this: 

getAllForms($arg1=null,$arg2=null)

getAllForms() and getAllForms("data")

How can I make this possible?

Upvotes: 4

Views: 13760

Answers (5)

Baba
Baba

Reputation: 95121

You can try:

function getAllForms() {
    extract(func_get_args(), EXTR_PREFIX_ALL, "data");
}

getAllForms();
getAllForms("a"); // $data_0 = a
getAllForms("a", "b"); // $data_0 = a $data_1 = b
getAllForms(null, null, "c"); // $data_0 = null $data_1 = null, $data_2 = c

Upvotes: 11

Daan Timmer
Daan Timmer

Reputation: 15047

<? php
function getAllForms($data1 = null, $data2 = null)
{
    if ($data1 != null)
    {
        // do something with $data1
    }

    if ($data2 != null)
    {
        // do something with $data2
    }
}
?>

getAllForms();
getAllForms("a");
getAllForms(null, "b");
getAllForms("a", "b");

or

<? php
function getAllForms($data = null)
{
    if (is_array($data))
    {
        foreach($data as $item)
        {
            getAllForms($item);
        }
    }
    else
    {
        if ($data != null)
        {
            // do something with data.
        }
    }
}

getAllForms();
getAllForms("a");
getAllForms(array("a"));
getAllForms(array("a", "b"));
?>

Upvotes: 1

Muthu Kumaran
Muthu Kumaran

Reputation: 17910

You can also try using func_get_arg which you can pass n number of arguments to a function.

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

Example

function foo(){
    $arg_list = func_get_args();
    for ($i = 0; $i < $numargs; $i++) {
        echo "Argument $i is: " . $arg_list[$i] . "<br />\n";
    }
}

foo(1, 2, 3);

Upvotes: 6

noetix
noetix

Reputation: 4923

You already described how you would do it:

function getAllForms($arg1 = null, $arg2 = null)

Except the every variable name (including the second) has to be different.

Upvotes: 1

Alessandro Minoccheri
Alessandro Minoccheri

Reputation: 35973

Try this:

getAllForms($data=null,$data2=null)

and you call it in this mode:

getAllForms()
getAllForms("data")
getAllForms("data","data2")

The second argument have to be different name respect the first

Upvotes: 3

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