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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 |
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794 | * @uses do_action() Calls 'add_site_option_$option' and 'add_site_option' hooks on success. |
795 | * |
796 | * @param string $option Name of option to add. Expected to not be SQL-escaped. |
797 | * @param mixed $value Optional. Option value, can be anything. Expected to not be SQL-escaped. |
798 | * @return bool False if option was not added and true if option was added. |
799 | */ |
800 | function add_site_option( $option, $value ) { |
801 | global $wpdb; |
802 |
|
803 | $value = apply_filters( 'pre_add_site_option_' . $option, $value ); |
804 |
|
805 | if ( !is_multisite() ) { |
806 | $result = add_option( $option, $value ); |
807 | } else { |
808 | $cache_key = "{$wpdb->siteid}:$option"; |
809 |
|
810 | if ( false !== get_site_option( $option ) ) |
811 | return false; |
812 |
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