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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 |
---|---|
786 | </table> |
787 | <?php |
788 | endif; |
789 |
|
790 | /** |
791 | * Fires just before the submit button in the custom header options form. |
792 | * |
793 | * @since 3.1.0 |
794 | */ |
795 | do_action( 'custom_header_options' ); |
796 |
|
797 | wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); |
798 | ?> |
799 |
|
800 | <?php submit_button( null, 'primary', 'save-header-options' ); ?> |
801 | </form> |
802 | </div> |
803 |
|
804 | <?php |