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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 |
---|---|
797 | * |
798 | * @since 2.8.0 |
799 | * |
800 | * @param string $html HTML markup sent to the editor for an image. |
801 | * @param string $src Image source URL. |
802 | * @param string $alt Image alternate, or alt, text. |
803 | * @param string $align The image alignment. Default 'alignnone'. Possible values include |
804 | * 'alignleft', 'aligncenter', 'alignright', 'alignnone'. |
805 | */ |
806 | $html = apply_filters( 'image_send_to_editor_url', $html, esc_url_raw( $src ), $alt, $align ); |
807 | } |
808 |
|
809 | return media_send_to_editor($html); |
810 | } |
811 |
|
812 | if ( isset( $_POST['save'] ) ) { |
813 | $errors['upload_notice'] = __('Saved.'); |
814 | wp_enqueue_script( 'admin-gallery' ); |
815 | return wp_iframe( 'media_upload_gallery_form', $errors ); |