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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 |
|---|---|
| 1726 | * |
| 1727 | * If modifying the password field, please note that the core database schema |
| 1728 | * limits the password field to 20 characters regardless of the value of the |
| 1729 | * size attribute in the form input. |
| 1730 | * |
| 1731 | * @since 2.7.0 |
| 1732 | * |
| 1733 | * @param string $output The password form HTML output. |
| 1734 | */ |
| 1735 | return apply_filters( 'the_password_form', $output ); |
| 1736 | } |
| 1737 | |
| 1738 | /** |
| 1739 | * Determines whether currently in a page template. |
| 1740 | * |
| 1741 | * This template tag allows you to determine if you are in a page template. |
| 1742 | * You can optionally provide a template filename or array of template filenames |
| 1743 | * and then the check will be specific to that template. |
| 1744 | * |