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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 |
|---|---|
| 1441 | * @since 3.0.0 |
| 1442 | * @since 4.4.0 The `$option` parameter was added. |
| 1443 | * @since 4.7.0 The `$network_id` parameter was added. |
| 1444 | * |
| 1445 | * @param mixed $value New value of the network option. |
| 1446 | * @param mixed $old_value Old value of the network option. |
| 1447 | * @param string $option Option name. |
| 1448 | * @param int $network_id ID of the network. |
| 1449 | */ |
| 1450 | $value = apply_filters( "pre_update_site_option_{$option}", $value, $old_value, $option, $network_id ); |
| 1451 | |
| 1452 | if ( $value === $old_value ) { |
| 1453 | return false; |
| 1454 | } |
| 1455 | |
| 1456 | if ( false === $old_value ) { |
| 1457 | return add_network_option( $network_id, $option, $value ); |
| 1458 | } |
| 1459 | |