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7 drupal_http_build_query(array $query, $parent = '')

Parse 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.


$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


Related topics

7 calls to drupal_http_build_query()


drupal/includes/, line 472
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);