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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 |
---|---|
130 | /** |
131 | * Filters the arguments for the Categories widget. |
132 | * |
133 | * @since 2.8.0 |
134 | * @since 4.9.0 Added the `$instance` parameter. |
135 | * |
136 | * @param array $cat_args An array of Categories widget options. |
137 | * @param array $instance Array of settings for the current widget. |
138 | */ |
139 | wp_list_categories( apply_filters( 'widget_categories_args', $cat_args, $instance ) ); |
140 | ?> |
141 | </ul> |
142 |
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143 | <?php |
144 | if ( 'html5' === $format ) { |
145 | echo '</nav>'; |
146 | } |
147 | } |
148 |
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