mysqli_connect_errno(3) [php man page]

MYSQLI_CONNECT_ERRNO(3) 						 1						   MYSQLI_CONNECT_ERRNO(3)

mysqli::$connect_errno - Returns the error code from last connect call

       Object oriented style

SYNOPSIS

       string$mysqli->connect_errno ()

DESCRIPTION

       Procedural style
       int mysqli_connect_errno (void  )

	Returns the last error code number from the last call to mysqli_connect(3).

       Note

	       Client  error  message  numbers	are  listed  in  the  MySQL  errmsg.h  header  file,  server  error  message numbers are listed in
	      mysqld_error.h. In the MySQL source distribution you can find a complete list of error  messages	and  error  numbers  in  the  file
	      Docs/mysqld_error.txt.

RETURN VALUES

	An error code value for the last call to mysqli_connect(3), if it failed. zero means no error occurred.

EXAMPLES

       Example #1

	      $mysqli->connect_errno example

	      Object oriented style

	      <?php
	      $mysqli = @new mysqli('localhost', 'fake_user', 'my_password', 'my_db');

	      if ($mysqli->connect_errno) {
		  die('Connect Error: ' . $mysqli->connect_errno);
	      }
	      ?>

	      Procedural style

	      <?php
	      $link = @mysqli_connect('localhost', 'fake_user', 'my_password', 'my_db');

	      if (!$link) {
		  die('Connect Error: ' . mysqli_connect_errno());
	      }
	      ?>

	      The above examples will output:

	      Connect Error: 1045

SEE ALSO

       mysqli_connect(3), mysqli_connect_error(3), mysqli_errno(3), mysqli_error(3), mysqli_sqlstate(3).

PHP Documentation Group 												   MYSQLI_CONNECT_ERRNO(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)