Tag:注册登录

Tag (注册登录)'s result:

php+mysql实现超原始的注册登录

涉及主要知识点: 1.php操作mysql 2.加密函数md5() 3.php用?页面间传递参数 4.$_GET[]和$_POST[] 平台:redhat6+php5.3+mysql14.14+ Apache/2.2.15 (经典LAMP) 注册页面(regtest.php): <!DOCTYPE html PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “http://www.w3.org/TR/html4/loose.dtd”> <html> <head> <meta http-equiv=”Content-Type” content=”text/html; charset=gb2312″> <title>welcome to regtest.php</title> </head> <body> <h1>reg</h1> <form method=”post” action=”reg_check.php”> username<input type=”text” name=”username” > password:<input type=”password” name=”password”> password again:<input type=”password” name=”pwd_again”> <input type=”submit” value=”submit”> <input type=”reset” value=”clean”> </form> </body> </html> 注册验证页面(reg_check.php): 用于验证注册和写入数据库 <?php $db = mysql_connect(“127.0.0.1″,”root”,”root”) or die(“Fail to connect db”); mysql_select_db(“userdb”,$db) or die (“can’t connect to userdb”.mysql_error()); $username=$_POST[‘username’]; $password=$_POST[‘password’]; $pwd_again=$_POST[‘pwd_again’]; if($username==””||$password==””) { echo”error:username or password empty”; } else { if($password!=$pwd_again) { echo”password is different!”; echo”<a href=’regtest.php’>input again</a>”; } else { $md5pass=md5($password); $sql=”insert into user(username,password) values(‘$username’,’$md5pass’)”; $result=mysql_query($sql); if(!$result) { echo”Fail reg!”.mysql_error(); echo”<a href=’regtest.php’>返回</a>”; } else { echo”Success reg!”; } } } ?> 看下数据库: 登录页面(logintest.php): <!DOCTYPE html PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “http://www.w3.org/TR/html4/loose.dtd”> <html> <head> <meta http-equiv=”Content-Type” content=”text/html; charset=gb2312″> <title>welcome to login</title> </head> <body> <form method=”post” action=”login_check.php”> username:<input type=”text” name=”username” > password:<input type=”password” name=”password”> <input type=”submit” value=”login”> <input type=”reset” value=”clean”> <a href=”regtest.php” >reg</a> </form> </body> </html> 登陆验证页面(login_check.php) <?php $username=$_POST[‘username’]; $password=$_POST[‘password’]; $db = mysql_connect(“127.0.0.1″,”root”,”root”) or die(“Fail to connect db!”); mysql_select_db(“userdb”,$db)……