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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 |
|---|---|
| 799 | border: 2px solid #cfcfcf; |
| 800 | } |
| 801 | #{$selector} .gallery-caption { |
| 802 | margin-left: 0; |
| 803 | } |
| 804 | /* see gallery_shortcode() in wp-includes/media.php */ |
| 805 | </style>"; |
| 806 | $size_class = sanitize_html_class( $size ); |
| 807 | $gallery_div = "<div id='$selector' class='gallery galleryid-{$id} gallery-columns-{$columns} gallery-size-{$size_class}'>"; |
| 808 | $output = apply_filters( 'gallery_style', $gallery_style . "\n\t\t" . $gallery_div ); |
| 809 | |
| 810 | $i = 0; |
| 811 | foreach ( $attachments as $id => $attachment ) { |
| 812 | if ( ! empty( $link ) && 'file' === $link ) |
| 813 | $image_output = wp_get_attachment_link( $id, $size, false, false ); |
| 814 | elseif ( ! empty( $link ) && 'none' === $link ) |
| 815 | $image_output = wp_get_attachment_image( $id, $size, false ); |
| 816 | else |
| 817 | $image_output = wp_get_attachment_link( $id, $size, true, false ); |