PHP MySQL入门教程之连接数据库

在php中连接数据有mysql_connect() 函数或mysql_pconnect()函数来完成,下面我给大家php入门者简单介绍介绍.

常用连接函数mysql_connect()

mysql_connect(servername,username,password);

长连接函数mysql_pconnect()

mysql_pconnect(servername,username,password);

PHP实例代码如下:

<?php 
$con = mysql_connect("localhost","peter","abc123"); 
if (!$con) 
{ 
    die(&#39;Could not connect: &#39; . mysql_error()); 
} 
// some code

说的是mysql_pconnect，怎么能绕开MySQL的设置,影响mysql_pconnect最重要的两个参数就是wait_timeout和interactive_timeout,代码如下:

<?php 
$conn = mysql_pconnect("localhost","root","123456") or die("Can not connect to MySQL"); 
echo "MySQL线程号:". MySQL_thread_id($conn). "<br />"; 
echo "Apache进程号". getmypid();