get_proto_info

定義和用法

mysqli_get_proto_info()函數返回MySQL 協議版本。

實例

例子1 - 面向對像風格

返回MySQL 協議版本：

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

if ( $mysqli -> connect_errno ) {
  echo "Failed to connect to MySQL: " . $mysqli -> connect_error ;
  exit ( ) ;
}

echo $mysqli -> protocol_version ;

$mysqli -> close ( ) ;
?>

例子2 - 過程式風格

返回MySQL 協議版本：

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

if ( mysqli_connect_errno ( ) ) {
  echo "Failed to connect to MySQL: " . mysqli_connect_error ( ) ;
  exit ( ) ;
}

echo mysqli_get_proto_info ( $con ) ;

mysqli_close ( $con ) ;
?>

文法

面向對像風格：

 $mysqli -> protocol_version

過程式風格：

 mysqli_get_proto_info ( connection )