PHP，MYSQL，JS记录没有更新或插入

Question

再回来。这个网站太棒了！

我有这个PHP：

        case 141:
           if (isset($_GET['SubmitR'])) {
              $cred = $row['chCred'] - ($_GET['Price'] * $_GET['Cnt']);
              if ($cred >= 0) {
                 $query = "UPDATE chars SET chCred = ".$cred." WHERE chNum = ".$_SESSION['chNum'];
                 $result = mysql_query($query, $_SESSION['connect']) or die(mysql_error());
                 $query = "SELECT * FROM pack WHERE pNum = ".$_GET['Pnum']." AND pChar = ".$_SESSION['chNum'];
                 $result = mysql_query($query, $_SESSION['connect']) or die(mysql_error());
                 $row = mysql_fetch_array($result);
                 $cnt = $row['pCnt'] -  $_GET['Cnt'];
                 if ($cnt <= 0) {
                    $query = "DELETE FROM pack WHERE pNum = ".$_GET['Pnum']." AND pChar = ".$_SESSION['chNum'];
                    mysql_query($query, $_SESSION['connect']) or die(mysql_error());
                 }
                 else {
                    $query = "UPDATE pack SET pCnt = ".$cnt." WHERE pNum = ".$_GET['Pnum']." AND pChar = ".$_SESSION['chNum'];
                    mysql_query($query, $_SESSION['connect']) or die(mysql_error());
                 }
                 $query = "SELECT * FROM pack WHERE pItem = ".$row['pItem']." AND pStr = ".$row['pStr']." AND pSpd = ".$row['pSpd']." AND pDur = ".$row['pDur']." AND pChar = ".$_SESSION['chNum'];
                 $result2 = mysql_query($query, $_SESSION['connect']) or die(mysql_error());
                 $row2 = mysql_fetch_array($result2) or die(mysql_error());
                 if (mysql_num_rows($result2) > 0) {
                    $cnt = $row2['pCnt'] +  $_GET['Cnt'];
                    $query = "UPDATE pack SET pCnt = ".$cnt." WHERE pNum = ".$row2['pNum']." AND pChar = ".$_SESSION['chNum'];
                    mysql_query($query, $_SESSION['connect']) or die(mysql_error());
                 }
                 else {
                    $maxNo = 0;
                    $query = "SELECT MAX(pNum) FROM pack WHERE pChar = ".$_SESSION['chNum'];
                    $result3 = mysql_query($query, $_SESSION['connect']) or die(mysql_error());
                    if (mysql_num_rows($result3) > 0) {
                       $row3 = mysql_fetch_row($result1);
                       $maxNo = $row3[0] + 1;
                       $query = "INSERT INTO pack VALUES (".$_SESSION['chNum'].",".$maxNo.",".$row['pItem'].",".$_GET['Cnt'].",".$row['pStr'].",".$row['pMaxDur'].",".$row['pSpd'].",".$row['pMaxDur'].",1)";
                       mysql_query($query, $_SESSION['connect']) or die(mysql_error());
                    }
                    else {
                       $maxNo = $maxNo + 1;
                       $query = "INSERT INTO pack VALUES (".$_SESSION['chNum'].",".$maxNo.",".$row['pItem'].",".$_GET['Cnt'].",".$row['pStr'].",".$row['pMaxDur'].",".$row['pSpd'].",".$row['pMaxDur'].",1)";
                       mysql_query($query, $_SESSION['connect']) or die(mysql_error());
                    }   
                 }                      
              }
              else {
                 $sColor = "#cc0000";
                 $sMsg = "Come with enough creds or pick a cheaper repair";
                 msgOut($_SESSION['connect'],$_SESSION['chNum'],$sMsg,$sColor);
              }
           }
//
           echo "<div style='text-align:center; border-style:none;'>";
           echo "<h3 style='color:#ffff00'>Repairs</h3>";
           echo "<table>";
           echo "<tr>";
           echo "<td style='color:#ffff00'>Pack Item</td><td>Cnt</td><td>Dur</td><td>Cost</td><td>Nbr</td><td>Sel</td>";
           $query = "SELECT * FROM pack WHERE pDur < pMaxDur AND pChar = ".$_SESSION['chNum']." ORDER BY pDur DESC";
           $result = mysql_query($query, $_SESSION['connect']) or die(mysql_error());
           while ($row = mysql_fetch_array($result)) {
              $query = "SELECT iDesc FROM item WHERE item = ".$row['pItem'];
              $result1 = mysql_query($query, $_SESSION['connect']) or die(mysql_error());
              $row1 = mysql_fetch_array($result1);
              $cost = ($row['pMaxDur'] - $row['pDur']) * 10;
              if ($cost < 0) {
                 $cost = 0;
              }
              echo "</tr><tr>";
              echo "<td>".$row1['iDesc']."</td><td>".$row['pCnt']."</td><td>".$row['pDur']."</td><td id='repairCost".$row['pNum']."' style='color:lightgreen'>".$cost."</td>";
              echo "<td>";
              echo "<select name='repair".$row['pNum']."' id='repair".$row['pNum']."' size='1' style='width: 60px;' onchange='repairCnt(".$cost.",".$row['pNum'].");'>";
              for ($i = 1; $i <= $row['pCnt']; $i++) {
                 echo "<option";
                 echo " value=".$i.">".$i;
              }
              echo "</select>";
              echo "</td>";
              echo "<td><input style='border-style:none;' type='radio' onclick='repair(".$_GET['Nbr'].",".$_GET['Strt'].",".$_GET['Bar'].",".$row['pNum'].")' /></td>";
           }
           echo "</tr>";
           echo "</table>";
           echo "</div>";
           break;

这个JS：

//
function repair(nbr,strt,bar,pnum) {
    var id = "repair"+pnum;
    var e = $(id); 
    var t =  e.options[e.selectedIndex].value;
    id = "repairCost"+pnum;
    var params = "Nbr="+nbr;
    params += "&Strt="+strt;
    params += "&Bar="+bar;
    params += "&Price="+$(id).innerHTML;
    params += "&Pnum="+pnum;
    params += "&Cnt="+t;
    params += "&SubmitR=1";
    params += "&sub08=showBackroom";
    alert(params);
    new Ajax.Updater('div08', 'php/div08.php', {method: 'get', parameters: params, onComplete: showPackB});
    }
//
function repairCnt(cost,pnum) {
    var id = "repair"+pnum;
    var e = $(id); 
    var t =  e.options[e.selectedIndex].value;
    var id = "repairCost"+pnum;
        $(id).innerHTML = cost * t;
    new Ajax.Updater('div08', 'php/div08.php', {method: 'get', parameters: params, onComplete: showStats});
}

当我用Pnum = 4，$ row ['pNum'] = 4，Cnt = 2和$ row ['pCnt'] = 4运行它时，它应该使用$ row更新记录['pCnt'] =没有什么变化。当我用Pnum = 4，$ row ['pNum'] = 4，Cnt = 4和$ row ['pCnt'] = 4运行它时，它应该删除记录并插入一个带有新值的新记录。该记录将被删除，但新记录不会被插入。