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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 |
|---|---|
| 818 | $itemtag = tag_escape($itemtag); |
| 819 | $captiontag = tag_escape($captiontag); |
| 820 | $columns = intval($columns); |
| 821 | $itemwidth = $columns > 0 ? floor(100/$columns) : 100; |
| 822 | $float = is_rtl() ? 'right' : 'left'; |
| 823 | |
| 824 | $selector = "gallery-{$instance}"; |
| 825 | |
| 826 | $gallery_style = $gallery_div = ''; |
| 827 | if ( apply_filters( 'use_default_gallery_style', true ) ) |
| 828 | $gallery_style = " |
| 829 | <style type='text/css'> |
| 830 | #{$selector} { |
| 831 | margin: auto; |
| 832 | } |
| 833 | #{$selector} .gallery-item { |
| 834 | float: {$float}; |
| 835 | margin-top: 10px; |
| 836 | text-align: center; |