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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 |
---|---|
1668 |
|
1669 | /** |
1670 | * Filters the media metadata. |
1671 | * |
1672 | * @since 2.5.0 |
1673 | * |
1674 | * @param string $media_dims The HTML markup containing the media dimensions. |
1675 | * @param WP_Post $post The WP_Post attachment object. |
1676 | */ |
1677 | $media_dims = apply_filters( 'media_meta', $media_dims, $post ); |
1678 |
|
1679 | $image_edit_button = ''; |
1680 |
|
1681 | if ( wp_attachment_is_image( $post->ID ) && wp_image_editor_supports( array( 'mime_type' => $post->post_mime_type ) ) ) { |
1682 | $nonce = wp_create_nonce( "image_editor-$post->ID" ); |
1683 | $image_edit_button = "<input type='button' id='imgedit-open-btn-$post->ID' onclick='imageEdit.open( $post->ID, \"$nonce\" )' class='button' value='" . esc_attr__( 'Edit Image' ) . "' /> <span class='spinner'></span>"; |
1684 | } |
1685 |
|
1686 | $attachment_url = get_permalink( $attachment_id ); |
Line | Code |
1940 | $form_fields['post_title'], |
1941 | $form_fields['post_excerpt'], |
1942 | $form_fields['post_content'], |
1943 | $form_fields['url'], |
1944 | $form_fields['menu_order'], |
1945 | $form_fields['image_url'] |
1946 | ); |
1947 |
|
1948 | /** This filter is documented in wp-admin/includes/media.php */ |
1949 | $media_meta = apply_filters( 'media_meta', '', $post ); |
1950 |
|
1951 | $defaults = array( |
1952 | 'input' => 'text', |
1953 | 'required' => false, |
1954 | 'value' => '', |
1955 | 'extra_rows' => array(), |
1956 | 'show_in_edit' => true, |
1957 | 'show_in_modal' => true, |
1958 | ); |
Line | Code |
3292 | $filename = esc_html( wp_basename( $file ) ); |
3293 |
|
3294 | $media_dims = ''; |
3295 | $meta = wp_get_attachment_metadata( $attachment_id ); |
3296 |
|
3297 | if ( isset( $meta['width'], $meta['height'] ) ) { |
3298 | $media_dims .= "<span id='media-dims-$attachment_id'>{$meta['width']} × {$meta['height']}</span> "; |
3299 | } |
3300 | /** This filter is documented in wp-admin/includes/media.php */ |
3301 | $media_dims = apply_filters( 'media_meta', $media_dims, $post ); |
3302 |
|
3303 | $att_url = wp_get_attachment_url( $attachment_id ); |
3304 |
|
3305 | $author = new WP_User( $post->post_author ); |
3306 |
|
3307 | $uploaded_by_name = __( '(no author)' ); |
3308 | $uploaded_by_link = ''; |
3309 |
|
3310 | if ( $author->exists() ) { |