如何同步與MySQL表中選擇列表的值中，

Question

當我進入lenght和寬度所選項目平方英尺是正確的，但是當涉及到定價，它總是乘以總平方英尺與第一項目價格......價格之內雖然它不在產品中......我應該在這方面尋找什麼想法？

while($info = mysql_fetch_array($data)) 
{ 
$resim = $info[resim]; 
$isim = $info[isim]; 
$boyut = $info[boyut]; 
$pcs = $info[adet]; 
$sqft = $info[sqft]; 
$TileNameList .= "<option value=\"$sqft\">$isim $boyut</option>"; 
$price .= $info[price]; 
} 
/////////Formdan gelen yada Giden////////////// 
$length =htmlspecialchars(stripslashes($_POST['Length'])); 
$width =htmlspecialchars(stripslashes($_POST['Width'])); 
$TileSqft =htmlspecialchars(stripslashes($_POST['TileName'])); 

/////Matematiksel islemler///////// 

$equals = $length * $width; 
$box = round($equals/$TileSqft); 
$TotalSqft = $box * $TileSqft; 
$TotalPrice = $TotalSqft * $price; 

，這其中i得到長*寬，但總價格的形式出來的錯誤..

<td><form id="form5" name="form5" method="post" action=""> 
     <select name="TileName" id="TileName"> 
     <option>Select</option> 
<?php echo ($TileNameList); ?> 
     </select> 
     </td> 
     <td><input name="Length" type="text" id="Length"/></td> 
     <td><input type="text" name="Width" id="Width"/></td> 
     <td><input type="text" name="Sqft" id="Sqft" value="<?php echo ($equals); ?>"/></td> 
     <td><?php echo "You will need <span style=\"color:red\">$box</span> Boxes<br> Which is <span style=\"color:red\">$TotalSqft</span> "; ?></td> 
     <td><?php echo "$$TotalPrice"; ?></td> 
    </tr> 
    <tr > 
     <td colspan="6" align="center"> 
     <input type="submit" name="Submit" id="Submit" value="Submit" /> 
     </form></td> 

Answer 1

你追加$price我想你建議立即進行刪除添加price 代碼爲

$price=0;//Add this line 
while($info = mysql_fetch_array($data)) 
{ 
$resim = $info[resim]; 
$isim = $info[isim]; 
$boyut = $info[boyut]; 
$pcs = $info[adet]; 
$sqft = $info[sqft]; 
$TileNameList .= "<option value=\"$sqft\">$isim $boyut</option>"; 
$price += $info[price];//change this line 
} 
/////////Formdan gelen yada Giden////////////// 
$length =htmlspecialchars(stripslashes($_POST['Length'])); 
$width =htmlspecialchars(stripslashes($_POST['Width'])); 
$TileSqft =htmlspecialchars(stripslashes($_POST['TileName'])); 

/////Matematiksel islemler///////// 

$equals = $length * $width; 
$box = round($equals/$TileSqft); 
$TotalSqft = $box * $TileSqft; 
$TotalPrice = $TotalSqft * $price;