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The Options API is a simple and standardized way of storing data in the database. The API makes it easy to create, access, update, and delete options. All the data is stored in the wp_options table under a given custom name. This page contains the technical documentation needed to use the Options API. A list of default options can be found in the Option Reference.
Note that the _site_ functions are essentially the same as their counterparts. The only differences occur for WP Multisite, when the options apply network-wide and the data is stored in the wp_sitemeta table under the given custom name.
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// Create an option to the database add_option( $option, $value = , $deprecated = , $autoload = 'yes' ); // Removes option by name. delete_option( $option ); // Fetch a saved option get_option( $option, $default = false ); // Update the value of an option that was already added. update_option( $option, $newvalue );