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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 |
|---|---|
| 1301 | |
| 1302 | /** |
| 1303 | * Filters the post type archive title. |
| 1304 | * |
| 1305 | * @since 3.1.0 |
| 1306 | * |
| 1307 | * @param string $post_type_name Post type 'name' label. |
| 1308 | * @param string $post_type Post type. |
| 1309 | */ |
| 1310 | $title = apply_filters( 'post_type_archive_title', $post_type_obj->labels->name, $post_type ); |
| 1311 | |
| 1312 | if ( $display ) |
| 1313 | echo $prefix . $title; |
| 1314 | else |
| 1315 | return $prefix . $title; |
| 1316 | } |
| 1317 | |
| 1318 | /** |
| 1319 | * Display or retrieve page title for category archive. |