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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 |
|---|---|
| 180 | * Fires when the WP_Customize_Setting::save() method is called. |
| 181 | * |
| 182 | * The dynamic portion of the hook name, `$this->id_data['base']` refers to |
| 183 | * the base slug of the setting name. |
| 184 | * |
| 185 | * @since 3.4.0 |
| 186 | * |
| 187 | * @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance. |
| 188 | */ |
| 189 | do_action( 'customize_save_' . $this->id_data[ 'base' ], $this ); |
| 190 | |
| 191 | $this->update( $value ); |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Fetch and sanitize the $_POST value for the setting. |
| 196 | * |
| 197 | * @since 3.4.0 |
| 198 | * |