feat(Request): Added server var fetching

Request.php

@@ -63,6 +63,17 @@ public static function fetch_req_var( $key, $def = null ) {
         return self::fetch_var( $_REQUEST[ $key ], $def );
     }
 
+    /**
+     * Fetch a variable from the $_SERVER superglobal.
+     *
+     * @param  string $key The key to fetch.
+     * @param  mixed  $def The default value.
+     * @return mixed The fetched value.
+     */
+    public static function fetch_server_var( $key, $def = null ) {
+        return self::fetch_var( $_SERVER[ $key ], $def );
+    }
+
     /**
      * Fetch, unslash, and clean a variable.
      *

xwp-helper-fns.php

@@ -224,6 +224,19 @@ function xwp_fetch_req_var( $key, $def = null ) {
     }
 endif;
 
+if ( ! function_exists( 'xwp_fetch_server_var' ) ) :
+    /**
+     * Get an item of `SERVER` data if set, otherwise return a default value.
+     *
+     * @param  string $key  SERVER key.
+     * @param  string $def  Default value.
+     * @return mixed  Value sanitized by xwp_uclean.
+     */
+    function xwp_fetch_server_var( $key, $def = null ) {
+        return f\Request::fetch_server_var( $key, $def );
+    }
+endif;
+
 
 if ( ! function_exists( 'xwp_format_term_name' ) ) :
     /**