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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.
This hook occurs 3 times in this file.
| Line | Code |
|---|---|
| 1652 | |
| 1653 | /** |
| 1654 | * Filters the media metadata. |
| 1655 | * |
| 1656 | * @since 2.5.0 |
| 1657 | * |
| 1658 | * @param string $media_dims The HTML markup containing the media dimensions. |
| 1659 | * @param WP_Post $post The WP_Post attachment object. |
| 1660 | */ |
| 1661 | $media_dims = apply_filters( 'media_meta', $media_dims, $post ); |
| 1662 | |
| 1663 | $image_edit_button = ''; |
| 1664 | |
| 1665 | if ( wp_attachment_is_image( $post->ID ) && wp_image_editor_supports( array( 'mime_type' => $post->post_mime_type ) ) ) { |
| 1666 | $nonce = wp_create_nonce( "image_editor-$post->ID" ); |
| 1667 | $image_edit_button = "<input type='button' id='imgedit-open-btn-$post->ID' onclick='imageEdit.open( $post->ID, \"$nonce\" )' class='button' value='" . esc_attr__( 'Edit Image' ) . "' /> <span class='spinner'></span>"; |
| 1668 | } |
| 1669 | |
| 1670 | $attachment_url = get_permalink( $attachment_id ); |
| Line | Code |
| 1924 | $form_fields['post_title'], |
| 1925 | $form_fields['post_excerpt'], |
| 1926 | $form_fields['post_content'], |
| 1927 | $form_fields['url'], |
| 1928 | $form_fields['menu_order'], |
| 1929 | $form_fields['image_url'] |
| 1930 | ); |
| 1931 | |
| 1932 | /** This filter is documented in wp-admin/includes/media.php */ |
| 1933 | $media_meta = apply_filters( 'media_meta', '', $post ); |
| 1934 | |
| 1935 | $defaults = array( |
| 1936 | 'input' => 'text', |
| 1937 | 'required' => false, |
| 1938 | 'value' => '', |
| 1939 | 'extra_rows' => array(), |
| 1940 | 'show_in_edit' => true, |
| 1941 | 'show_in_modal' => true, |
| 1942 | ); |
| Line | Code |
| 3276 | $filename = esc_html( wp_basename( $file ) ); |
| 3277 | |
| 3278 | $media_dims = ''; |
| 3279 | $meta = wp_get_attachment_metadata( $attachment_id ); |
| 3280 | |
| 3281 | if ( isset( $meta['width'], $meta['height'] ) ) { |
| 3282 | $media_dims .= "<span id='media-dims-$attachment_id'>{$meta['width']} × {$meta['height']}</span> "; |
| 3283 | } |
| 3284 | /** This filter is documented in wp-admin/includes/media.php */ |
| 3285 | $media_dims = apply_filters( 'media_meta', $media_dims, $post ); |
| 3286 | |
| 3287 | $att_url = wp_get_attachment_url( $attachment_id ); |
| 3288 | |
| 3289 | $author = new WP_User( $post->post_author ); |
| 3290 | |
| 3291 | $uploaded_by_name = __( '(no author)' ); |
| 3292 | $uploaded_by_link = ''; |
| 3293 | |
| 3294 | if ( $author->exists() ) { |