目录

PHP protocol_version() / mysqli_get_proto_info() 函数

❮ PHP MySQLi 参考

示例 - 面向对象风格

返回MySQL协议版本:

<?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();
?>

查看底部的程序样式示例。


定义和用法

mysqli_get_proto_info() 函数返回 MySQL 协议版本。


语法

面向对象风格:

$mysqli -> protocol_version

程序风格:

mysqli_get_proto_info( connection)

参数值

Parameter Description
connection Required. Specifies the MySQL connection to use

技术细节

返回值: 返回一个代表 MySQL 协议版本的整数
PHP 版本: 5+

示例 - 程序风格

返回MySQL协议版本:

<?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);
?>


❮ PHP MySQLi 参考