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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 |
|---|---|
| 1417 | } |
| 1418 | |
| 1419 | /** |
| 1420 | * Filters the parts of the page title. |
| 1421 | * |
| 1422 | * @since 4.0.0 |
| 1423 | * |
| 1424 | * @param string[] $title_array Array of parts of the page title. |
| 1425 | */ |
| 1426 | $title_array = apply_filters( 'wp_title_parts', explode( $t_sep, $title ) ); |
| 1427 | |
| 1428 | // Determines position of the separator and direction of the breadcrumb. |
| 1429 | if ( 'right' === $seplocation ) { // Separator on right, so reverse the order. |
| 1430 | $title_array = array_reverse( $title_array ); |
| 1431 | $title = implode( " $sep ", $title_array ) . $prefix; |
| 1432 | } else { |
| 1433 | $title = $prefix . implode( " $sep ", $title_array ); |
| 1434 | } |
| 1435 | |