SQL中的重复条目？

Question

我一直在SQL DB中获得重复的帖子。 这是我用来创建表并将数据插入数据库的代码..

$query = "SELECT * FROM '.$cname.' WHERE name='$itemname' and price='$price'";
                    $result = mysqli_query($db, $query);
                    $count = mysqli_num_rows($result);
                    if($count == 0){
                        //insert doesn't exist, continue
                        //insert sizes
                        $list = "";
                        $number = count($sizes);
                        $num = 0;
                        if($usesize == 'yes'){
                            $num = 1;
                            if($number > 0){
                                for($i=0; $i<$number; $i++){
                                    if(trim($_POST["size"][$i] != '')){
                                        if(empty($list)){
                                            $list = $_POST["size"][$i];
                                        }else{
                                            $list .= ",".$_POST["size"][$i];
                                        }
                                    }
                                }
                                echo $list;
                            }

                            $quantitylist = "";
                            $quantitynumber = count($quantity);
                            if($quantitynumber > 0){
                                for($a=0; $a<$quantitynumber; $a++){
                                    if(trim($_POST["quantity"][$a] != '')){
                                        if(empty($quantitylist)){
                                            $quantitylist = $_POST["quantity"][$a];
                                        }else{
                                            $quantitylist .= ",".$_POST["quantity"][$a];
                                        }
                                    }
                                }
                                echo $quantitylist;
                            }
                        }else{
                            $num = 0;
                        }

                        $colorlist = "";
                        $colornumber = count($colors);
                        $cnum = 0;
                        if($usecolors == 'yes'){
                            $cnum = 1;
                            if($colornumber > 0){
                                for($i=0; $i<$colornumber; $i++){
                                    if(trim($_POST["colors"][$i] != '')){
                                        if(empty($colorlist)){
                                            $colorlist = $_POST["colors"][$i];
                                        }else{
                                            $colorlist .= ":".$_POST["colors"][$i];
                                        }
                                    }
                                }
                                echo $colorlist;
                            }
                        }else{
                            $cnum = 0;
                        }

                        $query = "INSERT INTO ".$cname." (name, description, imgpath, price, sold, usesize, usecolors) VALUES ('$itemname', '$description', '$insertloc"."$name', '$price', '0', '$num', '$cnum')";
                        if(mysqli_query($db, $query)){
                            //inserted successfully
                            echo "Inserted successfully!";
                        }else{
                            $uploadOk = 0;
                            echo mysqli_error($db);
                        }

                        $conn = mysqli_connect('localhost', 'grampmkn_gramsandpops', 'Grams123', 'grampmkn_shop_quantity');
                        if($conn){
                            $query = "CREATE TABLE `".$itemname."` (
                                                    id int NOT NULL AUTO_INCREMENT,
                                                    size varchar(500),
                                                    color varchar(500),
                                                    quantity int(100),
                                                    PRIMARY KEY(id),
                                                    UNIQUE(size)
                                                    );";
                            $array = explode(',', $list);

                            if(mysqli_query($conn, $query)){
                                mysqli_select_db($conn, $name);
                                $array = explode(',', $list);
                                foreach($array as $value){
                                    $arrays = explode(':', $colorlist);
                                    foreach($arrays as $values){
                                        $arrays1 = explode(',', $quantitylist);
                                        foreach($arrays1 as $values1){
                                            $query = "INSERT INTO `".$itemname."` (size, color, quantity) VALUES ('$value', '$values', '$values1')";
                                            if(mysqli_query($conn, $query)){
                                                echo "Successfully inserted data into grampmkn_shop_quantity!";
                                            }else{
                                                echo mysqli_error($conn);
                                            }
                                        }
                                    }
                                }
                            }else{
                                echo "Could not create table";
                            }
                        }else{
                            echo "Could not connect to shop quantity database!";
                            echo mysqli_errno($conn);
                        }
                    }else{
                        //insert already exists
                        echo "Insert already exists!";
                        $uploadOk = 0;
                    }

来自DB的

Image

如果我删除嵌套循环，那么如何将数组中的所有数据插入到sql数据库中。 我只创建一次表，我只是插入多次以将所有数据都放入db。

感谢任何帮助。