(PHP 5)
mysqli->protocol_version -- mysqli_get_proto_info — Returns the version of the MySQL protocol used
Object oriented style (property):
Procedural style:
Returns an integer representing the MySQL protocol version used by the connection represented by the link parameter.
Returns an integer representing the protocol version.
Example #1 Object oriented style
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* print protocol version */
printf("Protocol version: %d\n", $mysqli->protocol_version);
/* close connection */
$mysqli->close();
?>
Example #2 Procedural style
<?php
$link = mysqli_connect("localhost", "my_user", "my_password");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* print protocol version */
printf("Protocol version: %d\n", mysqli_get_proto_info($link));
/* close connection */
mysqli_close($link);
?>
上例将输出：
Protocol version: 10