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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 |
---|---|
1464 | * @since 2.9.0 As 'site_option_' . $key |
1465 | * @since 3.0.0 |
1466 | * @since 4.4.0 The `$option` parameter was added. |
1467 | * @since 4.7.0 The `$network_id` parameter was added. |
1468 | * |
1469 | * @param mixed $value Value of network option. |
1470 | * @param string $option Option name. |
1471 | * @param int $network_id ID of the network. |
1472 | */ |
1473 | return apply_filters( "site_option_{$option}", $value, $option, $network_id ); |
1474 | } |
1475 |
|
1476 | /** |
1477 | * Adds a new network option. |
1478 | * |
1479 | * Existing options will not be updated. |
1480 | * |
1481 | * @since 4.4.0 |
1482 | * |