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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 |
---|---|
788 | * |
789 | * @since 2.8.0 |
790 | * |
791 | * @param string $html HTML markup sent to the editor for an image. |
792 | * @param string $src Image source URL. |
793 | * @param string $alt Image alternate, or alt, text. |
794 | * @param string $align The image alignment. Default 'alignnone'. Possible values include |
795 | * 'alignleft', 'aligncenter', 'alignright', 'alignnone'. |
796 | */ |
797 | $html = apply_filters( 'image_send_to_editor_url', $html, esc_url_raw( $src ), $alt, $align ); |
798 | } |
799 |
|
800 | return media_send_to_editor($html); |
801 | } |
802 |
|
803 | if ( isset( $_POST['save'] ) ) { |
804 | $errors['upload_notice'] = __('Saved.'); |
805 | return media_upload_gallery(); |
806 | } elseif ( ! empty( $_POST ) ) { |