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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 |
|---|---|
| 135 | array( |
| 136 | 'text' => isset( $instance['content'] ) ? $instance['content'] : '', |
| 137 | 'filter' => false, // Because wpautop is not applied. |
| 138 | 'visual' => false, // Because it wasn't created in TinyMCE. |
| 139 | ) |
| 140 | ); |
| 141 | unset( $simulated_text_widget_instance['content'] ); // Was moved to 'text' prop. |
| 142 | |
| 143 | /** This filter is documented in wp-includes/widgets/class-wp-widget-text.php */ |
| 144 | $content = apply_filters( 'widget_text', $instance['content'], $simulated_text_widget_instance, $this ); |
| 145 | |
| 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. |