PHP实例程序：用PHP制作登录页面程序

2022-07-15 80酷酷网 80kuku.com

<?php
//这个脚本是用来给用户输入口令，并判断口令是否正确的。
//如果正确则转到欢迎页面。
if ($login){
    include("../include/config.inc.php3");
    session_start();
    $right_enter='0';
    $query="select * from user_define where user_login='$user_login' and user_pass=password('$user_pass')";
    $result=mysql_query($query,$dbconnect);
    if ($user_array=mysql_fetch_array($result)){
        $user_id=$user_array[user_id];
        $user_name=$user_array[user_info];
        session_register("user_id");
        session_register("user_name");
        session_register("user_array");
        if(($user_array[ticket_day]) and ($user_array[ticket_num])){
            $right_enter='1';
        }
        else{
            $error_message="对不起，您没有订票的权限！";
        }
    }
    else{
        $error_message="错误！用户名错，或口令错。请重新输入。";
    }
    $log_time=date("Y-m-d H:i:s");
    $query="insert into log_record (log_time,user_login,remote_addr,right_enter,enter_function) values ('$log_time','$user_login','$REMOTE_ADDR','$right_enter','1')";
    mysql_query($query,$dbconnect);
    if($right_enter){
        Header("Location: welcome_reserve.php3");
        exit;
    }
}
if($logout){
    session_start();
    session_unregister("user_id");
    session_unregister("user_name");
    session_unregister("user_array");
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<form name="form1" method="post" action="<?php echo $PHP_SELF; ?>" >
<table width="289" border="1" cellspacing="0" cellpadding="1" bordercolor="#999999" align="center">
    <tr bgcolor="#999999">
      <td>
        <div align="center"><font color="#FFFFFF" size="4">用户登录</font></div>
      </td>
    </tr>
    <tr>
      <td>
        <table width="267" border="0" cellspacing="0" cellpadding="5" align="center">
          <tr>
            <td width="94">
              <div align="right">用户：</div>
            </td>
            <td width="169">
              <input type="text" name="user_login" size="16" maxlength="16" value="<?php echo $user_login; ?>">
            </td>
          </tr>
          <tr>
            <td width="94">
              <div align="right">口令：</div>
            </td>
            <td width="169">
              <input type="password" name="user_pass" size="16" maxlength="16">
            </td>
          </tr>
          <tr>
            <td colspan="2">
              <div align="center">
                <input type="submit" name="login" value=" 登录 ">
                <input type="button" name="return_index" value="返回首页" >
              </div>
            </td>
          </tr>
        </table>
      </td>
    </tr>
</table>
</form>
<?php
if($error_message) echo "<center><font color='#ff0000'>$error_message</font></center>";
?>
<SCRIPT language="JavaScript">document.form1.user_login.focus();
</SCRIPT>
<p> </p>
<?php include("../footer.php3"); ?>
</body>
</html>