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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 |
|---|---|
| 1241 | |
| 1242 | /** |
| 1243 | * Filters the page title for a single post. |
| 1244 | * |
| 1245 | * @since 0.71 |
| 1246 | * |
| 1247 | * @param string $_post_title The single post page title. |
| 1248 | * @param object $_post The current queried object as returned by get_queried_object(). |
| 1249 | */ |
| 1250 | $title = apply_filters( 'single_post_title', $_post->post_title, $_post ); |
| 1251 | if ( $display ) |
| 1252 | echo $prefix . $title; |
| 1253 | else |
| 1254 | return $prefix . $title; |
| 1255 | } |
| 1256 | |
| 1257 | /** |
| 1258 | * Display or retrieve title for a post type archive. |
| 1259 | * |