dongsui0929 2015-04-21 12:22
浏览 36
已采纳

我怎么能修复php var_dump错误

I am trying to use php to verify my html form a file.txt in witch i have a login , password. the problem in my php code that even when the variables are equal i get false when i compare them.The only exception is when i compare the first login and pasword i get true for both.

Here is my code to clarify my problem. so my html form calls this php page code.

<?php
echo " begin <br/>";
    $name=$_GET['username'];
    $password=$_GET['password'];
        echo "$name <br/>";
        echo "$password <br/>";
         $f = fopen("file.txt", "r");
         $res="0";  
            while(!feof($f))
           { echo "begin while <br/> ";
                $p3=fgetc($f );
                 while($p3!="|" && !feof($f) )
                 {
                  $user1=$user1.$p3;    
                  $p3=fgetc($f); 

                 } 
                  $p1=fgetc($f);
                    while($p1!="|" && !feof($f))
                     { $pass=$pass.$p1; 
                       $p1=fgetc($f); 
                     }
                     $p2=fgetc($f);
                    while($p2!="|" && !feof($f))
                      {
                        $q=$q.$p2;  
                        $p2=fgetc($f);  
                      }
                      var_dump($user1 == $name);
                    var_dump($password == $pass);
                    echo "<br/> $user1 <br/>";
                    echo "$pass <br/>";
                    echo "compare <br/>";
                    echo "$name <br/>";
                    echo "$password <br/>";
                 if( $name == $user1 && $password == $pass )
                   {  echo "succeeded <br/>";
                      echo "droit: $q <br/>";
                      echo "$res <br/>";
                        $res="1";
                        echo "$res <br/>";
                        break 2;
                    }

                    unset($p3);
                    unset($p1);
                    unset($p2);
                    unset($user1);
                    unset($pass);
                    unset($q);
             }
    fclose($f);
    if($res == "1")
        { echo "ok <br/>";}
    else 
        { echo " error <br/>";}

  echo " fin <br/>"
    ?>

my file.txt

abc|abc|87|
aaa|ccc|45|
ghi|ghi|67

now if i enter login abc password abc , iget this result in my page

 begin
abc
abc
begin while
bool(true) bool(true)
abc
abc
compare
abc
abc
succeeded
droit: 87
0
1 

now if i enter login aaa and password ccc , i get

begin
aaa
ccc
begin while
bool(false) bool(false)
abc
abc
compare
aaa
ccc
begin while
bool(false) bool(true)
aaa
ccc
compare
aaa
ccc
begin while
bool(false) bool(false)
ghi
ghi
compare
aaa
ccc
error
fin 

and even for the third user line i get an error even though the variable are equal.

I appreciate it, if any one could help me . and thanks in advance

  • 写回答

2条回答 默认 最新

  • douli4337 2015-04-21 12:32
    关注

    Looks like your $user1 is corrupted... are you sure there are no char after 'aaa' ? like 'aaa ' ? try to trim it : trim($name) == trim($user1)... otherwise, try to compare "$name" == "$user1" ?

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(1条)

报告相同问题?

悬赏问题

  • ¥15 寻一个支付宝扫码远程授权登录的软件助手app
  • ¥15 解riccati方程组
  • ¥15 display:none;样式在嵌套结构中的已设置了display样式的元素上不起作用?
  • ¥30 用arduino开发esp32控制ps2手柄一直报错
  • ¥15 使用rabbitMQ 消息队列作为url源进行多线程爬取时,总有几个url没有处理的问题。
  • ¥15 Ubuntu在安装序列比对软件STAR时出现报错如何解决
  • ¥50 树莓派安卓APK系统签名
  • ¥65 汇编语言除法溢出问题
  • ¥15 Visual Studio问题
  • ¥20 求一个html代码,有偿