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php一个简单的连接到mysql数据库的范例

PHP 水墨上仙 2442次浏览 0个评论

本代码演示了php如何连接到mysql数据库

<?php 
if(basename(__FILE__) == basename($_SERVER['PHP_SELF'])) send_404(); 
$dbHost = "localhost";        //Location Of Database usually its localhost 
$dbUser = "xxxx";            //Database User Name 
$dbPass = "xxxx";            //Database Password 
$dbDatabase = "xxxx";       //Database Name 
$db = mysql_connect($dbHost, $dbUser, $dbPass) or die ("Error connecting to database."); 
mysql_select_db($dbDatabase, $db) or die ("Couldn't select the database."); 
# This function will send an imitation 404 page if the user 
# types in this files filename into the address bar. 
# only files connecting with in the same directory as this 
# file will be able to use it as well. 
function send_404() 
{ 
    header('HTTP/1.x 404 Not Found'); 
    print '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">'."n". 
    '<html><head>'."n". 
    '<title>404 Not Found</title>'."n". 
    '</head><body>'."n". 
    '<h1>Not Found</h1>'."n". 
    '<p>The requested URL '. 
    str_replace(strstr($_SERVER['REQUEST_URI'], '?'), '', $_SERVER['REQUEST_URI']). 
    ' was not found on this server.</p>'."n". 
    '</body></html>'."n"; 
    exit; 
} 
# In any file you want to connect to the database,  
# and in this case we will name this file db.php  
# just add this line of php code (without the pound sign): 
# include"db.php"; 
# once  
?>


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