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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 |
|---|---|
| 256 | /** |
| 257 | * Filter an option before its value is (maybe) serialized and updated. |
| 258 | * |
| 259 | * @since 3.9.0 |
| 260 | * |
| 261 | * @param mixed $value The new, unserialized option value. |
| 262 | * @param string $option Name of the option. |
| 263 | * @param mixed $old_value The old option value. |
| 264 | */ |
| 265 | $value = apply_filters( 'pre_update_option', $value, $option, $old_value ); |
| 266 | |
| 267 | // If the new and old values are the same, no need to update. |
| 268 | if ( $value === $old_value ) |
| 269 | return false; |
| 270 | |
| 271 | if ( false === $old_value ) |
| 272 | return add_option( $option, $value ); |
| 273 | |
| 274 | $serialized_value = maybe_serialize( $value ); |