php form html button

Question

У меня был сайт, на котором вы могли выбрать сайт, на который хотите перейти, из выпадающего меню &, затем нажмите кнопку, чтобы перейти на него.

Такой умный, как я, я получил вирус на своем компьютере, & восстановлен из старой резервной копии. Короткий рассказ; не веб-сайт больше не работает .. вот код:

HTML:

<form method="post" name="form1" id="form1" action="process.php"> 
     <select name="taskOption" id="taskOption2"> 
     <option value="Select">Please select a site</option> 
     <option value="http://www.Itslearning.com">Itslearning</option> 
     <option value="http://www.NDLA.no">NDLA</option> 
     </select> 
    </form> 

    <button onclick="FormSubmit()" class="button button1 button1:hover">Take me there</button> 

PHP:

<?php 
$taskOption $_POST["taskOption"]; 
if ($taskOption) { 
    header("Location: $taskOption"); 

} 
else { 
    echo "Venligst velg en side."; 
    exit; 
} 



?> 

JAVASCRIPT:

function FormSubmit() { 
document.form1.submit(); 
} 

Answer 1

Во-первых, выглядит, как вы» re отсутствует оператор присваивания (=) в вашем PHP.

Он должен выглядеть следующим образом:

<?php 
$taskOption = $_POST["taskOption"]; 
if ($taskOption) { 
    header("Location: $taskOption"); 

} 
else { 
    echo "Venligst velg en side."; 
    exit; 
} 

?> 

Answer 2

Что ошибка вы получаете? По крайней мере одна ошибка в вашем файле PHP:

<?php 
$taskOption = $_POST["taskOption"]; 
if ($taskOption) { 
    header("Location: $taskOption"); 
} else { 
    echo "Venligst velg en side."; 
    exit; 
} 
?> 

Обратите внимание на «=» на второй строке.

Answer 3

Simple table to store urls: 

create table `urls` (
    `id` int(10) unsigned not null auto_increment, 
    `url` varchar(255) not null default '0', 
    `hash` varchar(16) not null default '0', 
    `hits` smallint(5) unsigned not null default '0', 
    primary key (`id`), 
    unique index `hash` (`hash`) 
) 
engine=innodb; 



Gives this structure: 

+-------+----------------------+------+-----+---------+----------------+ 
| Field | Type     | Null | Key | Default | Extra   | 
+-------+----------------------+------+-----+---------+----------------+ 
| id | int(10) unsigned  | NO | PRI | NULL | auto_increment | 
| url | varchar(255)   | NO |  | 0  |    | 
| hash | varchar(16)   | NO | UNI | 0  |    | 
| hits | smallint(5) unsigned | NO |  | 0  |    | 
+-------+----------------------+------+-----+---------+----------------+ 



Populated with dummy urls & unique hashes: 

+----+--------------------------------+------------------+------+ 
| id | url       | hash    | hits | 
+----+--------------------------------+------------------+------+ 
| 1 | http://www.example.com/page/1 | 53abc566010de29a | 45 | 
| 2 | http://www.example.com/page/2 | 8664d7fca34963d2 | 83 | 
| 3 | http://www.example.com/page/3 | fe06dca79d3d0415 | 49 | 
| 4 | http://www.example.com/page/4 | 3913aaaef701ecad | 35 | 
| 5 | http://www.example.com/page/5 | eb2eddc3ca2406c3 | 93 | 
| 6 | http://www.example.com/page/6 | acc809b96c6a42d9 | 50 | 
| 7 | http://www.example.com/page/7 | 63a4e53b1b374fcb | 90 | 
| 8 | http://www.example.com/page/8 | d9c13a146fc7c69a | 18 | 
| 9 | http://www.example.com/page/9 | eaa944c7e9a4ef7c | 76 | 
| 10 | http://www.example.com/page/10 | 59f9d294a29601c9 | 13 | 
+----+--------------------------------+------------------+------+ 



In the php page that displays the menu for the user to choose from 

<?php 

    $dbhost = 'localhost'; 
    $dbuser = 'xxx'; 
    $dbpwd = 'xxx'; 
    $dbname = 'xxx'; 
    $db = new mysqli($dbhost, $dbuser, $dbpwd, $dbname); 

    $sql='select * from `urls` order by `id`;'; 
    $result=$db->query($sql); 

    if($result){ 

     $html=array(); 
     $html[]="<form name='launcher' method='post' action='process.php'>"; 
     $html[]="<select name='taskOption'>"; 

     while($rs=$result->fetch_object()){ 
      $html[]="<option value='{$rs->hash}'>{$rs->url}"; 
     } 

     $result->close(); 
     $db->close(); 

     $html[]="</select>"; 
     $html[]="<input type='submit' value='Go' />"; 
     $html[]="</form>"; 

     echo implode(PHP_EOL, $html); 
    } 


?> 





<?php 
    /* process.php */ 

    /* 

     Rather than sending the actual URL via POST we only send a hash 
     which is then used in the sql to find the real url from the database. 

    */ 

    $errors=array(); 
    $url=false; 

    if($_SERVER['REQUEST_METHOD']=='POST' && isset($_POST['taskOption'])){ 

     /* rudimentary sanitisation of the string */ 
     $hash = filter_input(INPUT_POST, 'taskOption', FILTER_SANITIZE_STRING); 

     /* db credentials */ 
     $dbhost = 'localhost'; 
     $dbuser = 'xxx'; 
     $dbpwd = 'xxx'; 
     $dbname = 'xxx'; 
     $db = new mysqli($dbhost, $dbuser, $dbpwd, $dbname); 

     /* construct statement to find the url */ 
     $sql='select `url` from `urls` where `hash`=?'; 
     $stmt=$db->prepare($sql); 
     if($stmt){ 

      /* bind the variable - hash */ 
      $stmt->bind_param('s', $hash); 
      $result=$stmt->execute(); 

      /* */ 
      if($result){ 
       $stmt->store_result(); 
       $stmt->bind_result($url); 
       $stmt->fetch(); 
       $stmt->free_result(); 

       if(!$url) $errors[]='Unable to locate url'; 

       $sql='update `urls` set `hits`=`hits`+1 where `hash`=?'; 
       $stmt=$db->prepare($sql); 

       if($stmt){ 
        $stmt->bind_param('s',$hash); 
        $stmt->execute(); 
        $stmt->free_result(); 

       } else { 
        $errors[]='sql error updating hit count'; 
       } 
      } else { 
       $errors[]='No result found in database'; 
      } 
     } else { 
      $errors[]='sql error whilst preparing initial statement'; 
     } 

     $stmt->close(); 
     $db->close(); 





     /* Redirect the user if all went well otherwise show an error message */ 
     if(empty($errors)) exit(header("Location: $url")); 
     else exit("There were errors processing your request."); 

    } 

    /* only accept POST requests */ 
    exit('Bad foo - wrong method'); 
?>