PHP-Javascript的互動

Question

所以我一直試圖讓這個網頁在過去幾天正常工作。至於數據庫的操作，它不像一個魅力。問題是，它顯然不是我的JavaScript函數重定向回自己。它會顯示一個大部分空白的頁面，在URL中沒有$ _GET變量，這導致我相信問題實際上是在我的php函數中，而不是我的javascript函數。

function edit_player() 
{ 

try{ 
    if(isset($_GET['player_id'])) 
    { 
     if(isset($_GET['success']) && $_GET['success']) 
     { 
      echo "<div class='success'> You have successfully edited this players info.</div>" ; 
     } 
     $playerid = $_GET['player_id'] ; 
     $db = honneyconnect() ; // db connection established 
     if(mysqli_connect_error()) 
     { 
      throw new Exception("Could not connect to the database") ; 
     } 
     $query = 'select * from roster where player_number ="'.$playerid.'"' ; 
     $player = $db->query($query) ; 
     if(!$player ) 
     { 
      throw new Exception ("Query returned zero results") ; 
     } 
     else 
     { 
      $row = $player->fetch_row() ; 
      echo ' 
      <div class="data_entry"> 
      <form id="player_info" method="post" action="editplayer.php" enctype="multipart/form-data" /> 
      <input type="hidden" name="MAX_FILE_SIZE" value="50000000" /> 
      <input type="hidden" name="player_number" value="'.$row[0].'" /> 
      <table> 
      <tr><td>Player Number:</td><td>'.$row[0].'</td></tr> 
      <tr><td>Player Name:</td><td><input type="text" size="50" name="name" value="'.$row[1].'"/></td></tr> 
      <tr><td>Player Position:</td><td><input type="text" size="20" name="position" value="'.$row[2].'" /></td></tr> 
      <tr><td>Years Skating:</td><td><input type="text" size="3" name="years" value="'.$row[3].'"/></td></tr> 
      <tr><td>How You Chose Your Derby Name:</td><td><input type="text" size="100" name="choice" value="'.$row[4].'" /></td></tr> 
      <tr><td>Life Outside of Derby:</td><td><input type="text" size="100" name="life" value="'.$row[5].'" /></td></tr> 
      <tr><td>Current Photo: </td><td><img class="thumbnail" src="rosterpics/'.$row[6].'"></td></tr> 
      <tr><td>Choose a different photo:</td><td><input type="file" name="photo" id="photo" /></td></tr> 
      <tr><td>Sponsor:</td><td><input type="text" size="50" name="sponsors" value="'.$row[7].'"/></td></tr> 
      </table> 
      <input type="submit" value="Submit Data" /> 
      </form></div>' ; 
     } 
    } 
    else 
    { 
     if(isset($_POST['player_number']) && isset($_POST['name']) && isset($_POST['position']) 
     && isset($_POST['years']) && isset($_POST['choice']) && isset($_POST['life'])) 
     { 
      if(!file_exists($_FILES['photo']['tmp_name']) || !is_uploaded_file($_FILES['photo']['tmp_name'])) 
      { 
       $db = honneyconnect() ; // db connection established 
       if(mysqli_connect_error()) 
       { 
        throw new Exception("Could not connect to the database") ; 
       } 
       $query = 'update roster set player_name = "'.$_POST['name'].'" , 
        player_position = "'.$_POST['position'].'", player_years = "'.$_POST['years'].'" , player_choice = "'.$_POST['choice'].'", 
         player_life = "'.$_POST['life'].'" where player_number = "'.$_POST['player_number'].'"' ; 
       $player = $db->query($query) ; 
       if(!$player) 
       { 
        throw new Exception("Query failed") ; 
       } 
       else 
       { 
        if(isset($_POST['sponsors'])) 
        { 
         $query = 'update roster set player_sponsor = "'.$_POST['sponsors'].'" where player_number = "'.$_POST['player_number'].'"'; 
         $sponsor = $db->query($query) ; 
         if(!$sponsor) 
         { 
          throw new Exception("Failed to update sponsor.") ; 
         } 
         else 
         { 
          $url = "http://localhost/honeysproject/editplayer.php?player_id=".$_POST['player_number']."" ; 
          echo "<script type='text/javascript'>success_redirect(".$url.") ;</script>" ; 
         } 
        } 
        else 
        { 
         $url = "http://localhost/honeysproject/editplayer.php?player_id=".$_POST['player_number']."" ; 
         echo "<script type='text/javascript'>success_redirect(".$url.") ;</script>" ; 
        } 
       } 
      } 
      else 
      { 
       if($_FILES['photo']['size'] > 50000000) 
       { 
        throw new Exception("File is to large for this server."); 
       } 
       if(!move_uploaded_file($_FILES["photo"]["tmp_name"], "C:/wamp/www/HoneysProject/rosterpics/" . $_FILES["photo"]["name"])) 
       { 
        throw new Exception("There was a problem uploading the file") ; 
       } 
       else 
       { 
        $db = honneyconnect() ; // db connection established 
        if(mysqli_connect_error()) 
        { 
        throw new Exception("Could not connect to the database") ; 
        } 
        $query = 'update roster set player_name = "'.$_POST['name'].'" , 
        player_position = "'.$_POST['position'].'", player_years = "'.$_POST['years'].'" , player_choice = "'.$_POST['choice'].'", 
         player_life = "'.$_POST['life'].'", player_photo = "'.$_FILES['photo']['name'].'" where player_number = "'.$_POST['player_number'].'"' ; 
        $player = $db->query($query) ; 
        if(!$player) 
        { 
         throw new Exception("Query failed") ; 
        } 
        else 
        { 
         if(isset($_POST['sponsors'])) 
         { 
          $query = 'update roster set player_sponsor = "'.$_POST['sponsors'].'" where player_number = "'.$_POST['player_number'].'"'; 
          $sponsor = $db->query($query) ; 
          if(!$sponsor) 
          { 
           throw new Exception("Failed to update sponsor.") ; 
          } 
          else 
          { 
           $url = "http://localhost/honeysproject/editplayer.php?player_id=".$_POST['player_number']."" ; 
           echo "<script type='text/javascript'>success_redirect(".$url." );</script>" ; 
          } 
         } 
         else 
         { 
          $url = "http://localhost/honeysproject/editplayer.php?player_id=".$_POST['player_number']."" ; 
          echo "<script type='text/javascript'>success_redirect(".$url.") ;</script>" ; 
         } 
        } 
       } 
      } 

     } 
    } 
} 
catch(Exception $error) 
{ 
    echo "<div class='error'>".$error."</div>" ; 
    echo $_FILES['photo']['name'] ; 
} 
} 



<html> 
<head> 
<style> 
@import "honeysstyle.css"; 
</style> 
<script type="text/javascript"> 
function success_redirect(url) 
{ 
    window.location.replace(url) ; 

} 
</script> 
</head> 
<body> 
<?php 
require('function.php'); 

draw_masthead(); 
edit_player() ; 


?> 
</body> 
</html> 

Answer 1

success_redirect(".$url.") 

should be 

success_redirect('".$url." ') 

，爲什麼你不使用頭功能

header("Location: $url");