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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 |
|---|---|
| 1293 | /** |
| 1294 | * Filters the text of the page title. |
| 1295 | * |
| 1296 | * @since 2.0.0 |
| 1297 | * |
| 1298 | * @param string $title Page title. |
| 1299 | * @param string $sep Title separator. |
| 1300 | * @param string $seplocation Location of the separator (left or right). |
| 1301 | */ |
| 1302 | $title = apply_filters( 'wp_title', $title, $sep, $seplocation ); |
| 1303 | |
| 1304 | // Send it out |
| 1305 | if ( $display ) { |
| 1306 | echo $title; |
| 1307 | } else { |
| 1308 | return $title; |
| 1309 | } |
| 1310 | } |
| 1311 | |