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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 |
---|---|
2318 | /** |
2319 | * Filters whether to print default gallery styles. |
2320 | * |
2321 | * @since 3.1.0 |
2322 | * |
2323 | * @param bool $print Whether to print default gallery styles. |
2324 | * Defaults to false if the theme supports HTML5 galleries. |
2325 | * Otherwise, defaults to true. |
2326 | */ |
2327 | if ( apply_filters( 'use_default_gallery_style', ! $html5 ) ) { |
2328 | $type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"'; |
2329 |
|
2330 | $gallery_style = " |
2331 | <style{$type_attr}> |
2332 | #{$selector} { |
2333 | margin: auto; |
2334 | } |
2335 | #{$selector} .gallery-item { |
2336 | float: {$float}; |