mysqli_ping(3) [php man page]
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)
Check Out this Related Man Page
MYSQLI_GET_SERVER_VERSION(3) 1 MYSQLI_GET_SERVER_VERSION(3) mysqli::$server_version - Returns the version of the MySQL server as an integer Object oriented style SYNOPSIS
int$mysqli->server_version () DESCRIPTION
Procedural style int mysqli_get_server_version (mysqli $link) The mysqli_get_server_version(3) function returns the version of the server connected to (represented by the $link parameter) as an inte- ger. PARAMETERS
o $ link -Procedural style only: A link identifier returned by mysqli_connect(3) or mysqli_init(3) RETURN VALUES
An integer representing the server version. The form of this version number is main_version * 10000 + minor_version * 100 + sub_version (i.e. version 4.1.0 is 40100). EXAMPLES
Example #1 $mysqli->server_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 server version */ printf("Server version: %d ", $mysqli->server_version); /* close connection */ $mysqli->close(); ?> Procedural style <?php $link = mysqli_connect("localhost", "my_user", "my_password"); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s ", mysqli_connect_error()); exit(); } /* print server version */ printf("Server version: %d ", mysqli_get_server_version($link)); /* close connection */ mysqli_close($link); ?> The above examples will output: Server version: 40102 SEE ALSO
mysqli_get_client_info(3), mysqli_get_client_version(3), mysqli_get_server_info(3). PHP Documentation Group MYSQLI_GET_SERVER_VERSION(3)