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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 |
|---|---|
| 578 | * If a non-null value is passed, the filter will effectively short-circuit |
| 579 | * authentication, returning an error instead. |
| 580 | * |
| 581 | * @since 2.8.0 |
| 582 | * |
| 583 | * @param null|WP_User $user User to authenticate. |
| 584 | * @param string $username User login. |
| 585 | * @param string $password User password |
| 586 | */ |
| 587 | $user = apply_filters( 'authenticate', null, $username, $password ); |
| 588 | |
| 589 | if ( $user == null ) { |
| 590 | // TODO what should the error message be? (Or would these even happen?) |
| 591 | // Only needed if all authentication handlers fail to return anything. |
| 592 | $user = new WP_Error('authentication_failed', __('<strong>ERROR</strong>: Invalid username or incorrect password.')); |
| 593 | } |
| 594 | |
| 595 | $ignore_codes = array('empty_username', 'empty_password'); |
| 596 | |