Changeset 41158

Timestamp:

07/26/2017 04:24:15 PM (8 years ago)

Author:

johnbillion

Message:

Login and Registration: Introduce a username_exists filter, which allows for control over registration of usernames.

Props shamim51

Fixes #39320

File:

• trunk/src/wp-includes/user.php (modified) (1 diff)

trunk/src/wp-includes/user.php

@@ -1321 +1321 @@
 function username_exists( $username ) {
     if ( $user = get_user_by( 'login', $username ) ) {
-        return $user->ID;
-    }
-    return false;
+        $user_id = $user->ID;
+    } else {
+        $user_id = false;
+    }
+
+    /**
+     * Filters whether the given username exists or not.
+     *
+     * @since 4.9.0
+     *
+     * @param int|false $user_id  The user's ID on success, and false on failure.
+     * @param string    $username Username to check.
+     */
+    return apply_filters( 'username_exists', $user_id, $username );
 }