Source View: pre_update_site_option_{$option}

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

Line Code
3957  *
3958  * @param string $option Name of option. Expected to not be SQL-escaped.
3959  * @param mixed $value Option value. Expected to not be SQL-escaped.
3960  * @return bool False if value was not updated and true if value was updated.
3961  */
3962 function update_site_option( $option, $value ) {
3963      global $wpdb;
3964
3965      $oldvalue = get_site_option( $option );
3966      $value = apply_filters( 'pre_update_site_option_' . $option, $value, $oldvalue );
3967
3968      if ( $value === $oldvalue )
3969           return false;
3970
3971      if ( false === $oldvalue )
3972           return add_site_option( $option, $value );
3973
3974      if ( !is_multisite() ) {
3975           $result = update_option( $option, $value );