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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 572 | |
| 573 | if (is_wp_error($user) && !in_array($user->get_error_code(), $ignore_codes) ) { |
| 574 | /** |
| 575 | * Fires after a user login has failed. |
| 576 | * |
| 577 | * @since 2.5.0 |
| 578 | * |
| 579 | * @param string $username User login. |
| 580 | */ |
| 581 | do_action( 'wp_login_failed', $username ); |
| 582 | } |
| 583 | |
| 584 | return $user; |
| 585 | } |
| 586 | endif; |
| 587 | |
| 588 | if ( !function_exists('wp_logout') ) : |
| 589 | /** |
| 590 | * Log the current user out. |