function drupal_http_build_query, function drupal_get_query_parameters

https://api.drupal.org/api/drupal/includes%21common.inc/function/drupal_...

7 common.inc drupal_http_build_query(array $query, $parent = '')
Parses an array into a valid, rawurlencoded query string.

This differs from http_build_query() as we need to rawurlencode() (instead of urlencode()) all query parameters.

Parameters

$query: The query parameter array to be processed, e.g. $_GET.

$parent: Internal use only. Used to build the $query array key for nested items.

Return value

A rawurlencoded string which can be used as or appended to the URL query string.

See also

drupal_get_query_parameters()

Related topics

HTTP handling
Functions to properly handle HTTP responses.
PHP wrapper functions
Functions that are wrappers or custom implementations of PHP functions.
9 calls to drupal_http_build_query()
File

includes/common.inc, line 486
Common functions that many Drupal modules will need to reference.

function drupal_http_build_query(array $query, $parent = '') {
  $params = array();
 
  foreach ($query as $key => $value) {
    $key = ($parent ? $parent . '[' . rawurlencode($key) . ']' : rawurlencode($key));
 
    // Recurse into children.
    if (is_array($value)) {
      $params [] = drupal_http_build_query($value, $key);
    }
    // If a query parameter value is NULL, only append its key.
    elseif (!isset($value)) {
      $params [] = $key;
    }
    else {
      // For better readability of paths in query strings, we decode slashes.
      $params [] = $key . '=' . str_replace('%2F', '/', rawurlencode($value));
    }
  }
 
  return implode('&', $params);
}