socket_strerror ( int $error_number) : string — 返回与error_number（由socket_last_error() 获取）参数关联的错误消息 ~~~ $socket = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP); if ($socket === false) { $errorcode = socket_last_error(); $errormsg = socket_strerror($errorcode); die("Couldn't create socket: [$errorcode] $errormsg"); } ~~~