Php/func mysqli get proto info
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PHP protocol_version()/ mysqli_get_proto_info()函数
示例-面向对象的样式
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(); ?>
在底部查看程序样式的示例。
定义和用法
mysqli_get_proto_info()函数返回MySQL协议版本。
句法
面向对象的样式:
$mysqli -> protocol_version
程序风格:
mysqli_get_proto_info(connection)
参数值
参数 | 描述 |
---|---|
connection | 需要。指定要使用的MySQL连接 |
技术细节
返回值: | 返回代表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); ?>