How to make PHP recognize multiple instance of parameter as an Array?

Question

Is there an option in PHP via (php.ini) probably to recognize a parameter passed multiple times in the URL as an array?

/cars.php?color=A&color=B

The above query should result in an array of colors ['A','B'] instead of the second parameter 'B' overwriting the first parameter 'A'

Tim · Accepted Answer · 2015-04-01 12:02:49Z

1

Use this:

/cars.php?color[]=A&color[]=B
             //^^        ^^

No need to enable anything in php.ini, accessing $_GET['color'] will return an array.

edited Apr 1, 2015 at 12:02

answered Apr 1, 2015 at 12:01

Tim

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4 Comments

chrony Over a year ago

yup, i know that PHP uses this approach.. but is there an option to recognize the version without the [] as an array too?

Tim Over a year ago

I'm not aware of any such option.

Mathijs Segers Over a year ago

You could parse the url manually, but the way you want to do this right now is not how the query params should be used in any language anywhere. Even this example seems wrong to me it should be separated with a comma color=A,B

Tim Over a year ago

It may seem wrong, but it is how PHP is designed. php.net/parse_str#example-5111 Parsing manually would seem to be the only method if the URL cannot be changed

lpg · Accepted Answer · 2015-04-01 12:14:24Z

0

You can get the get params as string using:

$_SERVER['QUERY_STRING'];

So you could do something like this:

foreach(explode("&", $_SERVER['QUERY_STRING']) as $params) {
        list($key,$val) = explode("=",$params);
        $getArray[$key][] = $val;
}

var_dump($getArray);

However, this is really ugly, and other alternatives should be used (e.g., comma separated values)

edited Apr 1, 2015 at 12:14

answered Apr 1, 2015 at 12:05

lpg

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Comments

Benjamin Poignant · Accepted Answer · 2015-04-01 12:17:49Z

0

If you dont want chage your url, you can use this :

$url = 'http://www.test.com/cars.php?color=A&color=B';

$parse_url = parse_url($url);

$array_color = array();
if($parse_url['query']){


    foreach (explode('&',$parse_url['query']) as $parameter)
    {
        $explode = explode('=',$parameter);

        if($explode[0]=='color'){
            $array_color[] = $explode[1];
        }
    }
}

var_dump($array_color);

I dont recommend it but it's work.

answered Apr 1, 2015 at 12:17

Benjamin Poignant

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