WordPress 不允许注册某些用户名或使用某些字段

/**
  * Add custom checks on usernames.
  *
  * Specifically, prevent use of usernames ending in numbers.
  */
	function my_restrict_usernames_check( $valid, $username, $options ) {
		// Only do additional checking if the plugin has already performed its
		// checks and deemed the username valid.
		if ( $valid ) {
			// 不允许用户名以数字结尾
			if ( preg_match( '/[0-9]+$/', $username ) )
				$valid = false;
		}
		return $valid;
	}
 add_filter( 'c2c_restrict_usernames-validate', 'my_restrict_usernames_check', 10, 3 );

/** * Add custom checks on usernames. * * Specifically, prevent use of usernames ending in numbers. */ function my_restrict_usernames_check( $valid, $username, $options ) { // Only do additional checking if the plugin has already performed its // checks and deemed the username valid. if ( $valid ) { // 不允许用户名以数字结尾 if ( preg_match( '/[0-9]+$/', $username ) ) $valid = false; } return $valid; } add_filter( 'c2c_restrict_usernames-validate', 'my_restrict_usernames_check', 10, 3 );