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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 |
|---|---|
| 927 | * @param array $title { |
| 928 | * The document title parts. |
| 929 | * |
| 930 | * @type string $title Title of the viewed page. |
| 931 | * @type string $page Optional. Page number if paginated. |
| 932 | * @type string $tagline Optional. Site description when on home page. |
| 933 | * @type string $site Optional. Site title when not on home page. |
| 934 | * } |
| 935 | */ |
| 936 | $title = apply_filters( 'document_title_parts', $title ); |
| 937 | |
| 938 | $title = implode( " $sep ", array_filter( $title ) ); |
| 939 | $title = wptexturize( $title ); |
| 940 | $title = convert_chars( $title ); |
| 941 | $title = esc_html( $title ); |
| 942 | $title = capital_P_dangit( $title ); |
| 943 | |
| 944 | return $title; |
| 945 | } |