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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 |
|---|---|
| 1407 | * |
| 1408 | * @since 2.9.0 As 'pre_update_site_option_' . $key |
| 1409 | * @since 3.0.0 |
| 1410 | * @since 4.4.0 The `$option` parameter was added |
| 1411 | * |
| 1412 | * @param mixed $value New value of the network option. |
| 1413 | * @param mixed $old_value Old value of the network option. |
| 1414 | * @param string $option Option name. |
| 1415 | */ |
| 1416 | $value = apply_filters( 'pre_update_site_option_' . $option, $value, $old_value, $option ); |
| 1417 | |
| 1418 | if ( $value === $old_value ) { |
| 1419 | return false; |
| 1420 | } |
| 1421 | |
| 1422 | if ( false === $old_value ) { |
| 1423 | return add_network_option( $network_id, $option, $value ); |
| 1424 | } |
| 1425 | |