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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 |
|---|---|
| 870 | * Filters the title attribute of the given oEmbed HTML iframe. |
| 871 | * |
| 872 | * @since 5.2.0 |
| 873 | * |
| 874 | * @param string $title The title attribute. |
| 875 | * @param string $result The oEmbed HTML result. |
| 876 | * @param object $data A data object result from an oEmbed provider. |
| 877 | * @param string $url The URL of the content to be embedded. |
| 878 | */ |
| 879 | $title = apply_filters( 'oembed_iframe_title_attribute', $title, $result, $data, $url ); |
| 880 | |
| 881 | if ( '' === $title ) { |
| 882 | return $result; |
| 883 | } |
| 884 | |
| 885 | if ( isset( $attrs['title'] ) ) { |
| 886 | unset( $attrs['title'] ); |
| 887 | $attr_string = implode( ' ', wp_list_pluck( $attrs, 'whole' ) ); |
| 888 | $result = str_replace( $matches[0], '<iframe ' . trim( $attr_string ) . '>', $result ); |