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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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158 | * |
159 | * @since 4.7.0 |
160 | * |
161 | * @param bool $result Whether to override the default behavior for updating the |
162 | * value of a setting. |
163 | * @param string $name Setting name (as shown in REST API responses). |
164 | * @param mixed $value Updated setting value. |
165 | * @param array $args Arguments passed to register_setting() for this setting. |
166 | */ |
167 | $updated = apply_filters( 'rest_pre_update_setting', false, $name, $request[ $name ], $args ); |
168 |
|
169 | if ( $updated ) { |
170 | continue; |
171 | } |
172 |
|
173 | /* |
174 | * A null value for an option would have the same effect as |
175 | * deleting the option from the database, and relying on the |
176 | * default value. |