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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 |
|---|---|
| 1374 | } |
| 1375 | |
| 1376 | /** |
| 1377 | * Filters the parts of the page title. |
| 1378 | * |
| 1379 | * @since 4.0.0 |
| 1380 | * |
| 1381 | * @param string[] $title_array Array of parts of the page title. |
| 1382 | */ |
| 1383 | $title_array = apply_filters( 'wp_title_parts', explode( $t_sep, $title ) ); |
| 1384 | |
| 1385 | // Determines position of the separator and direction of the breadcrumb. |
| 1386 | if ( 'right' === $seplocation ) { // Separator on right, so reverse the order. |
| 1387 | $title_array = array_reverse( $title_array ); |
| 1388 | $title = implode( " $sep ", $title_array ) . $prefix; |
| 1389 | } else { |
| 1390 | $title = $prefix . implode( " $sep ", $title_array ); |
| 1391 | } |
| 1392 | |