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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 |
|---|---|
| 1271 | $title = implode( " $sep ", array_filter( $title ) ); |
| 1272 | |
| 1273 | /** |
| 1274 | * Filters the document title. |
| 1275 | * |
| 1276 | * @since 5.8.0 |
| 1277 | * |
| 1278 | * @param string $title Document title. |
| 1279 | */ |
| 1280 | $title = apply_filters( 'document_title', $title ); |
| 1281 | |
| 1282 | return $title; |
| 1283 | } |
| 1284 | |
| 1285 | /** |
| 1286 | * Displays title tag with content. |
| 1287 | * |
| 1288 | * @ignore |
| 1289 | * @since 4.1.0 |