mysqli_get_proto_info(3) [php man page]

MYSQLI_GET_PROTO_INFO(3)						 1						  MYSQLI_GET_PROTO_INFO(3)

mysqli::$protocol_version - Returns the version of the MySQL protocol used

       Object oriented style

SYNOPSIS

       string$mysqli->protocol_version ()

DESCRIPTION

       Procedural style
       int mysqli_get_proto_info (mysqli  $link)

	Returns an integer representing the MySQL protocol version used by the connection represented by the $link parameter.

PARAMETERS

	      o $
		link -Procedural style only: A link identifier returned by mysqli_connect(3) or mysqli_init(3)

RETURN VALUES

	Returns an integer representing the protocol version.

EXAMPLES

       Example #1

	      $mysqli->protocol_version example

	      Object oriented style

	      <?php
	      $mysqli = new mysqli("localhost", "my_user", "my_password");

	      /* check connection */
	      if (mysqli_connect_errno()) {
		  printf("Connect failed: %s
", mysqli_connect_error());
		  exit();
	      }

	      /* print protocol version */
	      printf("Protocol version: %d
", $mysqli->protocol_version);

	      /* close connection */
	      $mysqli->close();
	      ?>

	      Procedural style

	      <?php
	      $link = mysqli_connect("localhost", "my_user", "my_password");

	      /* check connection */
	      if (mysqli_connect_errno()) {
		  printf("Connect failed: %s
", mysqli_connect_error());
		  exit();
	      }

	      /* print protocol version */
	      printf("Protocol version: %d
", mysqli_get_proto_info($link));

	      /* close connection */
	      mysqli_close($link);
	      ?>

	      The above examples will output:

	      Protocol version: 10

SEE ALSO

       mysqli_get_host_info(3).

PHP Documentation Group 												  MYSQLI_GET_PROTO_INFO(3)

MYSQLI_PING(3)								 1							    MYSQLI_PING(3)

mysqli::ping - Pings a server connection, or tries to reconnect if the connection has gone down

       Object oriented style

SYNOPSIS

       bool mysqli::ping (void	)

DESCRIPTION

       Procedural style
       bool mysqli_ping (mysqli  $link)

	Checks	whether  the  connection to the server is working. If it has gone down, and global option mysqli.reconnect is enabled an automatic
       reconnection is attempted.

	This function can be used by clients that remain idle for a long while, to check whether the server has closed the connection  and  recon-
       nect if necessary.

PARAMETERS

	      o $
		link -Procedural style only: A link identifier returned by mysqli_connect(3) or mysqli_init(3)

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       Example #1

	      mysqli::ping example

	      Object oriented style

	      <?php
	      $mysqli = new mysqli("localhost", "my_user", "my_password", "world");

	      /* check connection */
	      if ($mysqli->connect_errno) {
		  printf("Connect failed: %s
", $mysqli->connect_error);
		  exit();
	      }

	      /* check if server is alive */
	      if ($mysqli->ping()) {
		  printf ("Our connection is ok!
");
	      } else {
		  printf ("Error: %s
", $mysqli->error);
	      }

	      /* close connection */
	      $mysqli->close();
	      ?>

	      Procedural style

	      <?php
	      $link = mysqli_connect("localhost", "my_user", "my_password", "world");

	      /* check connection */
	      if (mysqli_connect_errno()) {
		  printf("Connect failed: %s
", mysqli_connect_error());
		  exit();
	      }

	      /* check if server is alive */
	      if (mysqli_ping($link)) {
		  printf ("Our connection is ok!
");
	      } else {
		  printf ("Error: %s
", mysqli_error($link));
	      }

	      /* close connection */
	      mysqli_close($link);
	      ?>

	      The above examples will output:

	      Our connection is ok!

PHP Documentation Group 													    MYSQLI_PING(3)