请教PHP如何批量写入多条数据答:ordernumber,time,uid,status) VALUES ";foreach ($ShoppingCart as $k => $v){$sql .= "(".$v['pid'].",".$v['amount'].",'$ordernumber','$time','$uid','$status'),";$sql = substr($sql, 0,strlen($sql)-1);$res = mysql_query($sql,$conn);if(!$res)...
php如何将数组中id相同数据的value相加之后得到新的数组答:=> array('id'=>1,'value'=>4,),1 => array('id'=>2,'value'=>2,),2 => array('id'=>3,'value'=>3,),3 => array('id'=>4,'value'=>5,),4 => array('id'=>5,'value'=>1,),);$b = array(0 => array('id'=>1,'value'=>2,),1 => array('id'=>2...