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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 |
|---|---|
| 1638 | * |
| 1639 | * If modifying the password field, please note that the core database schema |
| 1640 | * limits the password field to 20 characters regardless of the value of the |
| 1641 | * size attribute in the form input. |
| 1642 | * |
| 1643 | * @since 2.7.0 |
| 1644 | * |
| 1645 | * @param string $output The password form HTML output. |
| 1646 | */ |
| 1647 | return apply_filters( 'the_password_form', $output ); |
| 1648 | } |
| 1649 | |
| 1650 | /** |
| 1651 | * Whether currently in a page template. |
| 1652 | * |
| 1653 | * This template tag allows you to determine if you are in a page template. |
| 1654 | * You can optionally provide a template name or array of template names |
| 1655 | * and then the check will be specific to that template. |
| 1656 | * |