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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 |
|---|---|
| 31 | printf( __('Links for %s'), esc_attr(get_bloginfo('name', 'display')) ); |
| 32 | ?></title> |
| 33 | <dateCreated><?php echo gmdate("D, d M Y H:i:s"); ?> GMT</dateCreated> |
| 34 | <?php |
| 35 | /** |
| 36 | * Fires in the OPML header. |
| 37 | * |
| 38 | * @since 3.0.0 |
| 39 | */ |
| 40 | do_action( 'opml_head' ); |
| 41 | ?> |
| 42 | </head> |
| 43 | <body> |
| 44 | <?php |
| 45 | if ( empty($link_cat) ) |
| 46 | $cats = get_categories(array('taxonomy' => 'link_category', 'hierarchical' => 0)); |
| 47 | else |
| 48 | $cats = get_categories(array('taxonomy' => 'link_category', 'hierarchical' => 0, 'include' => $link_cat)); |
| 49 | |