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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 |
|---|---|
| 124 | $post = null; |
| 125 | } |
| 126 | |
| 127 | // Prevent dumping out all attachments from the media library. |
| 128 | add_filter( 'shortcode_atts_gallery', array( $this, '_filter_gallery_shortcode_attrs' ) ); |
| 129 | |
| 130 | $instance = array_merge( $this->default_instance, $instance ); |
| 131 | |
| 132 | /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
| 133 | $title = apply_filters( 'widget_title', $instance['title'], $instance, $this->id_base ); |
| 134 | |
| 135 | // Prepare instance data that looks like a normal Text widget. |
| 136 | $simulated_text_widget_instance = array_merge( |
| 137 | $instance, |
| 138 | array( |
| 139 | 'text' => isset( $instance['content'] ) ? $instance['content'] : '', |
| 140 | 'filter' => false, // Because wpautop is not applied. |
| 141 | 'visual' => false, // Because it wasn't created in TinyMCE. |
| 142 | ) |