Ticket #34699: 34699.patch

wp-includes/functions.php

@@ -844 +844 @@
 }
 
 /**
+ * Get an item from a query string.
+ *
+ * @since 4.4.0
+ *
+ * @param string|array $key   Query key or keys to remove.
+ * @param bool|string  $query Optional. When false uses the current URL. Default false.
+ *
+ * @return string|null Value of key item
+ */
+
+function get_query_arg( $key, $query = false ) {
+
+        if ( $query === false) {
+                $query = $_SERVER['REQUEST_URI'];
+        }
+
+        $url = parse_url( $query );
+
+        if ( isset( $url['query'] ) ) {
+
+                parse_str( $url['query'], $output );
+
+                if ( isset( $output[ $key ] ) ) {
+                        return $output[ $key ];
+                }
+        }
+
+        return null;
+}
+
+/**
  * Returns an array of single-use query variable names that can be removed from a URL.
  *
  * @since 4.4.0