当初我觉得一个网站上注册和登录这两个功能很神奇,后来自己研究一下发现其实道理很简单,接下来看一下怎么实现的吧。。。。
我在我的电脑上建了几个文件:
login.html (登录页面)
register.html(注册页面)
success.html(登录成功跳转页面)
return.html(注册成功页面)
login.php
register.php
登录界面和注册界面以及success.html并没有
什么都是些html标记如下:
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< html >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" >
< title >登录界面</ title >
</ head >
< body >
< form method = "post" action = "login.php" >
账号:
< input type = "text" name = "usernamel" >< br />< br />
密码:
< input type = "password" name = "passwordl" >
< input type = "submit" value = "登录" name = "subl" >
< a href = "http://127.0.0.1:8080/register.html" >没有账号,注册</ a >
</ form >
</ body >
</ html >
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< html >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" >
< title >会员注册</ title >
</ head >
< body >
< form method = "post" action = "register.php" >
账 户:
< input type = "text" name = "username" >< br />< br />
密 码:
< input type = "password" name = "password" >< br />< br />
密码确认:
< input type = "password" name = "password2" >
< input type = "submit" value = "注册" name = "sub" >
</ form >
</ body >
</ html >
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return.html是注册成功之后呈现的页面,里面有一段js代码是用来定时返回登录界面的
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< html >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" >
< title >无标题文档</ title >
</ head >
< body >
注册成功!< br />
5秒后返回登录界面< br />
你也可以直接点击回到< a href = "http://127.0.0.1:8080/login.html" >登录页面</ a >
< script type = "text/javascript" >
setTimeout("ren()",5000);
function ren()
{
window.location="http://127.0.0.1:8080/login.html";
}
</ script >
</ body >
</ html >
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register.php这是与注册页面相对应后台页面
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<?php
$link =mysql_connect( "localhost" , "root" , "207207" ); //链接数据库
header( "Content-type:text/html;charset=utf-8" );
if ( $link )
{
//echo"链接数据库成功";
$select =mysql_select_db( "login" , $link ); //选择数据库
if ( $select )
{
//echo"选择数据库成功!";
if (isset( $_POST [ "sub" ]))
{
$name = $_POST [ "username" ];
$password1 = $_POST [ "password" ]; //获取表单数据
$password2 = $_POST [ "password2" ];
if ( $name == "" || $password1 == "" ) //判断是否填写
{
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.alert" . "(" . "\"" . "请填写完成!" . "\"" . ")" . ";" . "</script>" ;
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.location=" . "\"" . "http://127.0.0.1:8080/register.html" . "\"" . "</script>" ;
exit ;
}
if ( $password1 == $password2 ) //确认密码是否正确
{
$str = "select count(*) from register where username=" . "'" . "$name" . "'" ;
$result =mysql_query( $str , $link );
$pass =mysql_fetch_row( $result );
$pa = $pass [0];
if ( $pa ==1) //判断数据库表中是否已存在该用户名
{
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.alert" . "(" . "\"" . "该用户名已被注册" . "\"" . ")" . ";" . "</script>" ;
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.location=" . "\"" . "http://127.0.0.1:8080/register.html" . "\"" . "</script>" ;
exit ;
}
$sql = "insert into register values(" . "\"" . "$name" . "\"" . "," . "\"" . "$password1" . "\"" . ")" ; //将注册信息插入数据库表中
//echo"$sql";
mysql_query( $sql , $link );
mysql_query( 'SET NAMES UTF8' );
$close =mysql_close( $link );
if ( $close )
{
//echo"数据库关闭";
//echo"注册成功!";
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.location=" . "\"" . "http://127.0.0.1:8080/return.html" . "\"" . "</script>" ;
}
}
else
{
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.alert" . "(" . "\"" . "密码不一致!" . "\"" . ")" . ";" . "</script>" ;
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.location=" . "\"" . "http://127.0.0.1:8080/register.html" . "\"" . "</script>" ;
}
}
}
}
?>
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login.php登录界面对应后台文件
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<?php
header( "Content-type:text/html;charset=utf-8" );
$link =mysql_connect( "localhost" , "root" , "207207" );
if ( $link )
{
$select =mysql_select_db( "login" , $link );
if ( $select )
{
if (isset( $_POST [ "subl" ]))
{
$name = $_POST [ "usernamel" ];
$password = $_POST [ "passwordl" ];
if ( $name == "" || $password == "" ) //判断是否为空
{
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.alert" . "(" . "\"" . "请填写正确的信息!" . "\"" . ")" . ";" . "</script>" ;
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.location=" . "\"" . "http://127.0.0.1:8080/login.html" . "\"" . "</script>" ;
exit ;
}
$str = "select password from register where username=" . "'" . "$name" . "'" ;
mysql_query( 'SET NAMES UTF8' );20 $result =mysql_query( $str , $link );
$pass =mysql_fetch_row( $result );
$pa = $pass [0];
if ( $pa == $password ) //判断密码与注册时密码是否一致
{
echo "登录成功!" ;
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.location=" . "\"" . "http://127.0.0.1:8080/success.html" . "\"" . "</script>" ;
}
{
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.alert" . "(" . "\"" . "登录失败!" . "\"" . ")" . ";" . "</script>" ;
echo "<script type=" . "\"" . "text/javascript" . "\"" . ">" . "window.location=" . "\"" . "http://127.0.0.1:8080/login.html" . "\"" . "</script>" ;
}
}
}
}
?>
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自己闲来无事做的还有许多要完善的地方,欢迎大家提问讨论,提供更简便的方法!
以上就是小编为大家带来的php注册和登录界面的实现案例(推荐)全部内容了,希望大家多多支持服务器之家~