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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 |
|---|---|
| 837 | $itemtag = tag_escape($itemtag); |
| 838 | $captiontag = tag_escape($captiontag); |
| 839 | $columns = intval($columns); |
| 840 | $itemwidth = $columns > 0 ? floor(100/$columns) : 100; |
| 841 | $float = is_rtl() ? 'right' : 'left'; |
| 842 | |
| 843 | $selector = "gallery-{$instance}"; |
| 844 | |
| 845 | $gallery_style = $gallery_div = ''; |
| 846 | if ( apply_filters( 'use_default_gallery_style', true ) ) |
| 847 | $gallery_style = " |
| 848 | <style type='text/css'> |
| 849 | #{$selector} { |
| 850 | margin: auto; |
| 851 | } |
| 852 | #{$selector} .gallery-item { |
| 853 | float: {$float}; |
| 854 | margin-top: 10px; |
| 855 | text-align: center; |