今日做了一个测试:
同样的代码,在本机上测试运行很快,但是放到了服务器上,则需要大约5-6秒左右的时间
代码如下:
$username="infouser"; $userpass="it123"; $dbhost= "localhost"; $db_connect=mysql_connect($dbhost,$username,$userpass) or die("Unable to connect to the MySQL!"); mysql_select_db('syinfo');
本机环境:windows xp , XAMPP
服务器环境:windows 2008, XAMPP
将 $dblost="localhost"
改成了 $dblost="127.0.0.1";
速度就提升了不少
这是为什么?
回复内容:
今日做了一个测试:
同样的代码,在本机上测试运行很快,但是放到了服务器上,则需要大约5-6秒左右的时间
代码如下:
$username="infouser"; $userpass="it123"; $dbhost= "localhost"; $db_connect=mysql_connect($dbhost,$username,$userpass) or die("Unable to connect to the MySQL!"); mysql_select_db('syinfo');
本机环境:windows xp , XAMPP
服务器环境:windows 2008, XAMPP
将 $dblost="localhost"
改成了 $dblost="127.0.0.1";
速度就提升了不少
这是为什么?
当主机填写为localhost时mysql会采用 unix domain socket连接
当主机填写为127.0.0.1时mysql会采用tcp方式连接
localhost代表你本地的DNS
DNS代表的是域名系统
当你输入你的域名的时候,就会向DSN主机进行查询,然后返回响应的IP地址。
LOCALHOST返回的是127.0.0.1则代表的是你本地的IP
从网上看到的
:-P
hosts里加一句
127.0.0.1 localhost
完事。
服务器是IPv6?

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PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

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PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

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