Remove query string except from google map api

Question

I have an issue similar to many others in the web, but still with no solution so far.

To remove query strings i've used the following code:

function _remove_script_version( $src ){
    $parts = explode( '?', $src );
    return $parts[0];
}
add_filter( 'script_loader_src', '_remove_script_version', 15, 1 );
add_filter( 'style_loader_src', '_remove_script_version', 15, 1 );

What i'ld like, is to know if someone believe to know how to set up a code to exclude googple map api query string from being removed.

To fix the error below:

“The Google Maps API server rejected your request. The “sensor” parameter specified in the request must be set to either “true” or “false”.

Does anyone beleive to know how to fix this?

Answer 1

First of all I would like to strongly recommend you to not remove query parts of javascript and stylesheet files. Why? Because they contain a version of a file.

Why do I need it for? We need to add version to each file (whenever it is possible) to prevent versions collisions. These collisions could appear when a new version of WP/plugin is released and you update it from admin panel. In this case, your users' browser won't be notified that a new version of a script exists and won't download it, but will use previous one which is stored in browser cache.

But if you strongly confident that you don't need it and still want to trim query strings, you can do it by changing your function to the following view:

function _remove_script_version( $src ){
    return add_query_arg( 'ver', false, $src );
}
add_filter( 'script_loader_src', '_remove_script_version', 15, 1 );
add_filter( 'style_loader_src', '_remove_script_version', 15, 1 );

Answer 2

This would be my approach:

function _remove_script_version( $src ){
  $parsed = parse_url($src);

  if (isset($parsed['query'])) {
    parse_str($parsed['query'], $qrystr);
    if (isset($qrystr['ver'])) {
      unset($qrystr['ver']); 
    }
    $parsed['query'] = http_build_query($qrystr);
  }
  // return http_build_url($parsed); // elegant but not always available

  $src = '';
  $src .= (!empty($parsed['scheme'])) ? $parsed['scheme'].'://' : '';
  $src .= (!empty($parsed['host'])) ? $parsed['host'] : '';
  $src .= (!empty($parsed['path'])) ? $parsed['path'] : '';
  $src .= (!empty($parsed['query'])) ? '?'.$parsed['query'] : '';

  return $src;
}
add_filter( 'script_loader_src', '_remove_script_version', 15, 1 );
add_filter( 'style_loader_src', '_remove_script_version', 15, 1 );

You would explicitly unset particular query parameters, in this case only the ver parameter, leaving everything else intact.

As far as query strings and caching: https://stackoverflow.com/questions/850187/caching-from-urls-with-a-query-string