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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 |
|---|---|
| 1219 | * @param array $title { |
| 1220 | * The document title parts. |
| 1221 | * |
| 1222 | * @type string $title Title of the viewed page. |
| 1223 | * @type string $page Optional. Page number if paginated. |
| 1224 | * @type string $tagline Optional. Site description when on home page. |
| 1225 | * @type string $site Optional. Site title when not on home page. |
| 1226 | * } |
| 1227 | */ |
| 1228 | $title = apply_filters( 'document_title_parts', $title ); |
| 1229 | |
| 1230 | $title = implode( " $sep ", array_filter( $title ) ); |
| 1231 | $title = wptexturize( $title ); |
| 1232 | $title = convert_chars( $title ); |
| 1233 | $title = esc_html( $title ); |
| 1234 | $title = capital_P_dangit( $title ); |
| 1235 | |
| 1236 | return $title; |
| 1237 | } |