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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 |
|---|---|
| 498 | </div> |
| 499 | <?php |
| 500 | /** |
| 501 | * Fires before the permalink field in the edit form. |
| 502 | * |
| 503 | * @since 4.1.0 |
| 504 | * |
| 505 | * @param WP_Post $post Post object. |
| 506 | */ |
| 507 | do_action( 'edit_form_before_permalink', $post ); |
| 508 | ?> |
| 509 | <div class="inside"> |
| 510 | <?php |
| 511 | $sample_permalink_html = $post_type_object->public ? get_sample_permalink_html($post->ID) : ''; |
| 512 | $shortlink = wp_get_shortlink($post->ID, 'post'); |
| 513 | |
| 514 | if ( !empty( $shortlink ) && $shortlink !== $permalink && $permalink !== home_url('?page_id=' . $post->ID) ) |
| 515 | $sample_permalink_html .= '<input id="shortlink" type="hidden" value="' . esc_attr($shortlink) . '" /><a href="#" class="button button-small" onclick="prompt('URL:', jQuery(\'#shortlink\').val()); return false;">' . __('Get Shortlink') . '</a>'; |
| 516 | |