CODEWITHSUNDEEP
phpquery-string
Nicolas Le Thierry d'Ennequin
Nicolas Le Thierry d'Ennequin

Reputation: 6154

Converting a querystring into an associative array

In PHP, I need a function to convert a querystring from an URL, say: http://example.com?key1=value1&key2=value2 into a PHP associative array : array ['key1' => 'value1', 'key2' => 'value2'].

I've come up to this piece of code. It works, but I find it a bit lengthy. (And PHP has built-in functions for everything: I'm surprised I haven't found anything out-of-the-box, something like the reverse of http_build_query.)

Can you suggest a better way to do this?

function getUrlParams($url) {
  $querystring = parse_url($url, PHP_URL_QUERY);
  $a = explode("&", $querystring);
  if (!(count($a) == 1 && $a[0] == "")) {
    foreach ($a as $key => $value) {
      $b = explode("=", $value);
      $a[$b[0]] = $b[1];
      unset ($a[$key]);
    }
    return $a;
  } else {
    return false;
  }
}

Upvotes: 29

Views: 39383

Answers (5)

MNR
MNR

Reputation: 757

If you mean as what you written then it is very simple and don't need anything else there is a predefined Superglobal variable $_GET in PHP which itself represents all the query string as key, value pairs associative array.

Example:

// current page URI: http://localhost/test.php?key1=value1&key2=value2

echo '<pre>';
print_r($_GET);
echo '</pre>';

Result:

Array(
    [key1] = value1
    [key2] = value2
)

For more information about $_GET PHP superglobal goto: http://php.net/manual/en/reserved.variables.get.php

Upvotes: 3

user3454065
user3454065

Reputation: 1

$url = 'http://example.com?key1=value1&key2=value2&key3=value3';

preg_match_all('/\w+=.*/',$url,$matches);

parse_str($matches[0][0], $output);

print_r($output);

Upvotes: 0

472084
472084

Reputation: 17895

You can get just the atributes from a URL using parse_url()

Once you have that you can use parse_str() to convert them to variables, it works with multidimensional arrays too!

$str = "first=value&arr[]=foo+bar&arr[]=baz";

parse_str($str, $output);
echo $output['first'];  // value
echo $output['arr'][0]; // foo bar
echo $output['arr'][1]; // baz

Upvotes: 65

lup
lup

Reputation: 5

foreach ($_GET as $key => $value) $arr["$key"]= $value;

Upvotes: -2

k102
k102

Reputation: 8079

Try using parse_url

Upvotes: -3

Related Questions