我的问题有点长,所以请耐心等待
我有2个表产品和购物车.我加入了2个表并创建了一个单个数组,但是这个数组的一部分我没有正确获取数据.产品尺寸表有4种尺寸(小,中,大,每件)的产品.
我从2个表中得到的数组就像下面的数组一样,这里的主要部分是4个数组： – size,cost,purchasesize,purchasequantity 0索引值应保留为small,1为medium 2为large和3为perpiece.
Array
(
[0] => Array
(
[productid] => 1
[size] => Array
(
[0] => small //reserved for small
[1] => medium //reserved for medium
[2] => large //reserved for large
[3] => 0 //reserved for perpiece
)
[cost] => Array
(
[0] => 10 //reserved for small
[1] => 20 //reserved for medium
[2] => 30 //reserved for large
[3] => 0 //reserved for perpiece
)
[purchasedsize] => Array
(
[0] => small //reserved for small
[1] => 0 //reserved for medium
[2] => large //reserved for large
[3] => 0 //reserved for perpiece
)
[purchasedquantity] => Array
(
[0] => 2 //reserved for small
[1] => 0 //reserved for medium
[2] => 3 //reserved for large
[3] => 0 //reserved for perpiece
)
)
)
问题是这种定位适用于阵列尺寸和成本,但在购买尺寸,购买数量,如果购物车有尺寸perpiece的产品,那么它转移到索引值0
Array
(
[0] => Array
(
[productid] => 2
[size] => Array
(
[0] => 0
[1] => 0
[2] => 0
[3] => perpiece
)
[cost] => Array
(
[0] => 0
[1] => 0
[2] => 0
[3] => 40
)
[purchasedsize] => Array
(
[0] => perpiece
[1] => 0
[2] => 0
[3] => 0
)
[purchasedquantity] => Array
(
[0] => 1
[1] => 0
[2] => 0
[3] => 0
)
)
)
产品化表
id productid prodsize cost 1 1 small 10 2 1 medium 20 3 1 large 30 4 2 perpiece 40
购物车表
id productid prodsize prodcost quantity 1 1 small 10 2 2 1 large 30 3 3 2 perpiece 40 1
我正在使用的代码是
$sql= "SELECT p.productid,GROUP_CONCAT(p.prodsize ORDER BY p.id ASC) as size,GROUP_CONCAT(p.cost ORDER BY p.id ASC) as cost,GROUP_CONCAT(c.prodsize,'-',c.quantity) as cart_details,GROUP_CONCAT(disTINCT(c.userid)) as user_id FROM productsize p LEFT JOIN cart c ON(c.productid = p.productid AND p.prodsize = c.prodsize) GROUP BY p.productid ORDER BY user_id DESC,p.productid ASC"; $result = MysqL_query($sql); if (MysqL_num_rows($result) > 0) { $i = 0; while($row = MysqL_fetch_assoc($result)) { $rows[$i]['productid'] = $row['productid']; $final_size = array_fill(0,4,'0'); $final_cost = array_fill(0,'0'); $size = explode(',',$row['size']); $cost = explode(',$row['cost']); foreach($size as $k=>$sizecol) { switch($sizecol) { case 'Small': $array_key = '0'; break; case 'Medium': $array_key = '1'; break; case 'Large': $array_key = '2'; break; case 'Perpiece': $array_key = '3'; break; } $final_size[$array_key] = $sizecol; $final_cost[$array_key] = $cost[$k]; } $cart_details = explode(',$row['cart_details']); $purchasedsize = array_fill(0,'0'); $purchasedquantity = array_fill(0,'0'); foreach($cart_details as $cart) { if($cart != '') { $details = explode('-',$cart); $key = array_search($details[0],$size); $purchasedsize[$key] = $details[0]; $purchasedquantity[$key] = $details[1]; } } $rows[$i]['size'] = $final_size; $rows[$i]['cost'] = $final_cost; $rows[$i]['purchasedsize'] = $purchasedsize; $rows[$i]['purchasedquantity'] = $purchasedquantity; $rows[$i]['userid'] = $row['user_id']; $i++; } }
解决方法
删除了我没有的用户详细信息,并尝试使用小写的数据.请看一看
$sql= "SELECT p.productid,GROUP_CONCAT(p.cost ORDER BY p.id ASC) as cost,c.quantity) as cart_details FROM productsize p LEFT JOIN cart c ON(c.productid = p.productid AND p.prodsize = c.prodsize) GROUP BY p.productid ORDER BY p.productid ASC"; $result = MysqL_query($sql); if (MysqL_num_rows($result) > 0) { $i = 0; while($row = MysqL_fetch_assoc($result)) { $purchasedData = array(); $purchasedsize = $purchasedquantity = $final_size = $final_cost = array_fill(0,'0'); $size = explode(',$row['size']); $cost = explode(',$row['cost']); $cart_details = explode(',$row['cart_details']); foreach($cart_details as $cart) { if($cart != '') { $details = explode('-',$cart); $key = array_search($details[0],$size); $purchasedData[$details[0]] = $details[1]; } } foreach($size as $k => $sizecol) { switch($sizecol) { case 'small': $array_key = '0'; break; case 'medium': $array_key = '1'; break; case 'large': $array_key = '2'; break; case 'perpiece': $array_key = '3'; break; } $final_size[$array_key] = $sizecol; $final_cost[$array_key] = $cost[$k]; if ($purchasedData[$sizecol]) { $purchasedsize[$array_key] = $sizecol; $purchasedquantity[$array_key] = $purchasedData[$sizecol]; } } $rows[$i]['productid'] = $row['productid']; $rows[$i]['size'] = $final_size; $rows[$i]['cost'] = $final_cost; $rows[$i]['purchasedsize'] = $purchasedsize; $rows[$i]['purchasedquantity'] = $purchasedquantity; $rows[$i]['userid'] = $row['user_id']; $i++; } } echo "<pre>"; print_r($rows); echo "</pre>";
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