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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 |
---|---|
1505 | * @since 2.9.0 As 'site_option_' . $key |
1506 | * @since 3.0.0 |
1507 | * @since 4.4.0 The `$option` parameter was added. |
1508 | * @since 4.7.0 The `$network_id` parameter was added. |
1509 | * |
1510 | * @param mixed $value Value of network option. |
1511 | * @param string $option Option name. |
1512 | * @param int $network_id ID of the network. |
1513 | */ |
1514 | return apply_filters( "site_option_{$option}", $value, $option, $network_id ); |
1515 | } |
1516 |
|
1517 | /** |
1518 | * Adds a new network option. |
1519 | * |
1520 | * Existing options will not be updated. |
1521 | * |
1522 | * @since 4.4.0 |
1523 | * |