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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 |
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146 | /** |
147 | * Filters the content of the Custom HTML widget. |
148 | * |
149 | * @since 4.8.1 |
150 | * |
151 | * @param string $content The widget content. |
152 | * @param array $instance Array of settings for the current widget. |
153 | * @param WP_Widget_Custom_HTML $this Current Custom HTML widget instance. |
154 | */ |
155 | $content = apply_filters( 'widget_custom_html_content', $content, $instance, $this ); |
156 |
|
157 | // Restore post global. |
158 | $post = $original_post; |
159 | remove_filter( 'shortcode_atts_gallery', array( $this, '_filter_gallery_shortcode_attrs' ) ); |
160 |
|
161 | // Inject the Text widget's container class name alongside this widget's class name for theme styling compatibility. |
162 | $args['before_widget'] = preg_replace( '/(?<=\sclass=["\'])/', 'widget_text ', $args['before_widget'] ); |
163 |
|
164 | echo $args['before_widget']; |