我正在在线服装店的电子商务网站上工作，现在我试图在购物车中添加选定的产品选项（颜色，尺寸，数量等），但它会显示尺寸的最后选择和颜色，即使我没有从页面中选择尺寸或颜色也是如此。
您能帮我吗？
single_product.php
if (isset($_GET['id'])) {
require 'includes/productdb.inc.php';
$id = $_GET['id'];
$sql = mysqli_query($con,"SELECT * FROM prodcutitemsub WHERE id='$id'");
$productcount = mysqli_num_rows($sql);
if($productcount > 0 ) {
//GET ALL PRODUCT DETAILS.
while($row = mysqli_fetch_array($sql)){
$product_name = $row['description_en'];
$brand = $row['brand'];
$material = $row['material'];
$price = $row['price'];
}
} else {
echo " That item doesn't exist";
exit();
}
} else {
echo "Data to render this page is missing";
exit();
}
$product_size = $con->query("SELECT distinct size FROM `product_options` WHERE productitemsub_id = '$id' GROUP BY size");
$product_color = $con->query("SELECT distinct color FROM `product_options` WHERE productitemsub_id = '$id' GROUP BY color");
$res = "SELECT distinct id FROM `prodcutitemsub` WHERE id = '$id' ";
if(isset($_GET['size']) && $_GET['size']!="") :
$size = $_GET['size'];
$res.=" AND size IN ('".implode("','",$size)."')";
endif;
if(isset($_GET['color']) && $_GET['color']!="") :
$color = $_GET['color'];
$res.=" AND color IN ('".implode("','",$color)."')";
endif;
html代码：
<form method="post" action="single.php?action=add&id=<?php echo $id; ?>">
<h3><?php echo $product_name; ?></h3>
<p><span class="item_price"><?php echo $price; ?></span></p>
<div class="color-quality">
<div class="color-quality-right">
<h5>Quantity :</h5>
<input type="text" name="quantity" class="text-center" value="1" />
</div>
</div>
<div class="occasional">
<h5>Color: </h5>
<div class="colr ert">
<?php
foreach ($product_color as $key => $new_color) :
if(isset($_GET['color'])) :
if(in_array(data_clean($new_color['color']),$_GET['color'])) :
$check='checked="checked"';
else : $check="";
endif;
endif;
?>
<label class="radio" for="color[]"><input type="radio" name="color[]" ><i></i><?=ucfirst($new_color['color']); ?></label>
<?php endforeach; ?>
</div>
<!-- <div class="colr">
<label class="radio"><input type="radio" name="radio"><i></i>Sneakers </label>
</div>
<div class="colr">
<label class="radio"><input type="radio" name="radio"><i></i>Formal Shoes</label>
</div> -->
<div class="clearfix"> </div>
</div>
<div class="occasional">
<h5>Size: </h5>
<div class="colr ert">
<?php
// get the sizes and display them here.
foreach ($product_size as $key => $new_size) :
if(isset($_GET['size'])) :
if(in_array($new_size['size'],$_GET['size'])) :
$check='checked="checked"';
else : $check="";
endif;
endif;
?>
<label class="radio" for="size[]"><input type="radio" name="size[]" value="<?=ucfirst($new_size['size']); ?>" <?=@$check;?>><i></i><?=ucfirst($new_size['size']); ?></label>
<?php endforeach; ?>
</div>
<div class="clearfix"> </div>
</div>
<div class="occasion-cart">
<div class="snipcart-details top_brand_home_details item_add single-item hvr-outline-out button2">
<form action="#" method="post">
<fieldset>
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="description_en" value="<?php echo $product_name; ?>">
<input type="hidden" name="price" value="<?php echo $price; ?>">
<!--Display the selected size and color in the shopping cart--> <input type="hidden" name="size" value="<?=ucfirst($new_size['size']);?>">
<input type="hidden" name="img" value="<?php echo $img; ?>">
<input type="hidden" name="color" value="<?php echo $new_color['color']; ?>">
<input type="submit" name="add" value="Add to cart" class="button">
</fieldset>
</form>
</div>
</div>
</form>
cart.php
require 'includes/cart.inc.php';
if (!empty($_SESSION["cart"])) {
$total = 0;
foreach($_SESSION["cart"] as $key => $value){
?>
<div class="row" id="products">
<div class="cart-content">
<div class="col-lg-3 col-md-3 col-sm-3 text-center border-right">
<a href="cart.php?action=delete&barcode=<?php echo $value["barcode"]; ?>" class="popup-items-close">×</a>
<img src="<?php echo $value["img"]; ?>" alt="Tour photo" class="popup__img">
</div>
<div class="col-lg-3 col-md-3 col-sm-3 text-center border-right height">
<h4 class="cart-title text-center vertical-center"><a href="#" class="item-link"><?php echo $value["description_en"]; ?></a></h4>
<p class="desc">Size: <?php echo $value["size"]; ?></p>
<p class="desc">color: <?php echo $value["color"] ?></p>
</div>
<div class="col-lg-3 col-md-3 col-md-3 col-sm-3 text-center border-right height">
<p class="quantity-title">Quantity</p>
<span class="quantity-num"><?php echo $value["quantity"]; ?></span>
</div>
<div class="col-lg-3 col-md-3 col-md-3 col-sm-3 text-center height">
<p class="quantity-title">Price</p>
<span class="quantity-num">$<?php echo number_format($value["quantity"] * $value["price"], 2); ?></span>