/**
* Retrieve a modified URL query string.
*
* You can rebuild the URL and append a new query variable to the URL query by
* using this function. You can also retrieve the full URL with query data.
*
* Adding a single key & value or an associative array. Setting a key value to
* an empty string removes the key. Omitting oldquery_or_uri uses the $_SERVER
* value. Additional values provided are expected to be encoded appropriately
* with urlencode() or rawurlencode().
*
* @since 4.7.0
*
* @param string|array $param1 Either newkey or an associative_array.
* @param string $param2 Either newvalue or oldquery or URI.
* @param string $param3 Optional. Old query or URI.
* @return string New URL query string.
*/
function add_query_arg()
{
$args = func_get_args();
if (is_array($args[0])) {
if (count($args) < 2 || false === $args[1]) {
$uri = $_SERVER['REQUEST_URI'];
} else {
$uri = $args[1];
}
} else {
if (count($args) < 3 || false === $args[2]) {
$uri = $_SERVER['REQUEST_URI'];
} else {
$uri = $args[2];
}
}
if ($frag = strstr($uri, '#')) {
$uri = substr($uri, 0, -strlen($frag));
} else {
$frag = '';
}
if (0 === stripos($uri, 'http://')) {
$protocol = 'http://';
$uri = substr($uri, 7);
} elseif (0 === stripos($uri, 'https://')) {
$protocol = 'https://';
$uri = substr($uri, 8);
} else {
$protocol = '';
}
if (strpos($uri, '?') !== false) {
list($base, $query) = explode('?', $uri, 2);
$base .= '?';
} elseif ($protocol || strpos($uri, '=') === false) {
$base = $uri . '?';
$query = '';
} else {
$base = '';
$query = $uri;
}
asc_parse_str($query, $qs);
$qs = urlencode_deep($qs);
// this re-URL-encodes things that were already in the query string
if (is_array($args[0])) {
$kayvees = $args[0];
$qs = array_merge($qs, $kayvees);
} else {
$qs[$args[0]] = $args[1];
}
foreach ($qs as $k => $v) {
if ($v === false) {
unset($qs[$k]);
}
}
$ret = build_query($qs);
$ret = trim($ret, '?');
$ret = preg_replace('#=(&|$)#', '$1', $ret);
$ret = $protocol . $base . $ret . $frag;
$ret = rtrim($ret, '?');
return $ret;
}
/**
* Administration Screen CSS for changing the styles.
*
* If installing the 'wp-admin/' directory will be replaced with './'.
*
* The $_asc_admin_css_colors global manages the Administration Screens CSS
* stylesheet that is loaded. The option that is set is 'admin_color' and is the
* color and key for the array. The value for the color key is an object with
* a 'url' parameter that has the URL path to the CSS file.
*
* The query from $src parameter will be appended to the URL that is given from
* the $_asc_admin_css_colors array value URL.
*
* @since 2.6.0
* @uses $_asc_admin_css_colors
*
* @param string $src Source URL.
* @param string $handle Either 'colors' or 'colors-rtl'.
* @return string URL path to CSS stylesheet for Administration Screens.
*/
function asc_style_loader_src($src, $handle)
{
global $_asc_admin_css_colors;
if (defined('ASC_INSTALLING')) {
return preg_replace('#^wp-admin/#', './', $src);
}
if ('colors' == $handle) {
$color = get_user_option('admin_color');
if (empty($color) || !isset($_asc_admin_css_colors[$color])) {
$color = 'fresh';
}
$color = $_asc_admin_css_colors[$color];
$parsed = parse_url($src);
$url = $color->url;
if (!$url) {
return false;
}
if (isset($parsed['query']) && $parsed['query']) {
asc_parse_str($parsed['query'], $qv);
$url = add_query_arg($qv, $url);
}
return $url;
}
return $src;
}
