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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 |
|---|---|
| 160 | * |
| 161 | * @since 4.7.0 |
| 162 | * |
| 163 | * @param bool $result Whether to override the default behavior for updating the |
| 164 | * value of a setting. |
| 165 | * @param string $name Setting name (as shown in REST API responses). |
| 166 | * @param mixed $value Updated setting value. |
| 167 | * @param array $args Arguments passed to register_setting() for this setting. |
| 168 | */ |
| 169 | $updated = apply_filters( 'rest_pre_update_setting', false, $name, $request[ $name ], $args ); |
| 170 | |
| 171 | if ( $updated ) { |
| 172 | continue; |
| 173 | } |
| 174 | |
| 175 | /* |
| 176 | * A null value for an option would have the same effect as |
| 177 | * deleting the option from the database, and relying on the |
| 178 | * default value. |