Question

我正在使用MySQL/PHP并且有一个搜索结果页面，该页面使用2个连接从多个表中提取数据。我得到的所有数据都很好。例如，特定记录（商店）有3种货币，我从我的货币表中提取它们。但是，我只能在结果中显示第一种货币（欧元）。我希望货币的结果字段显示所选商店的货币表中的所有货币，并像(Euro, Dollars, Yen)

那样回显

 $query = "SELECT * FROM store 
 //joins part of query
 where store.id=1
 GROUP BY store.name
 ";

 $result = mysqli_query($link, $query);
 while ($row = mysqli_fetch_assoc($result)){


 Name: <?php echo $row['name']; ?>
 Banking Currency Options:</b> <?php echo $row['currency']; ?>  
   //only displays first currency of the three records in the currency table. 
   //How do I return all 3 results/currencies here, separated by a comma?  
   //Like "Euro, Dollars, Yen"
   //I need some sort of the second loop for currency

 Languages:</b> <?php echo $row['language']; ?>

Answer 1

请考虑以下事项：

数据集

SELECT colors, products FROM my_table ORDER BY colors,products;
+--------+----------+
| colors | products |
+--------+----------+
| Blue   | Bag      |
| Blue   | Belt     |
| Blue   | Biro     |
| Blue   | Bucket   |
| Blue   | Cotton   |
| Blue   | Pants    |
| Blue   | Paper    |
| Blue   | Shoes    |
| Yellow | Cap      |
| Yellow | Car      |
| Yellow | Hat      |
| Yellow | Phone    |
| Yellow | Pouch    |
| Yellow | Sandal   |
| Yellow | Shirt    |
| Yellow | Socks    |
| Yellow | Track    |
+--------+----------+

代码

<?php

include('path/to/connection/stateme.nts');

$query = "SELECT colors, products FROM my_table ORDER BY colors,products;";


$result = mysqli_query($conn,$query);

$array = array();

while($row = mysqli_fetch_assoc($result)){
$array[] = $row;
}

foreach($array as $v){
$new_array[$v['colors']][] = $v['products'];
}

print_r($new_array);
?>

输出：

    Array
    (
        [Blue] => Array
            (
                [0] => Bag
                [1] => Belt
                [2] => Biro
                [3] => Bucket
                [4] => Cotton
                [5] => Pants
                [6] => Paper
                [7] => Shoes
            )

        [Yellow] => Array
            (
                [0] => Cap
                [1] => Car
                [2] => Hat
                [3] => Phone
                [4] => Pouch
                [5] => Sandal
                [6] => Shirt
                [7] => Socks
                [8] => Track
            )

    )

希望你以逗号分隔的字符串，或者一些JSON或者其他什么来吐出来，这不应该太过分。

如何在循环中使用循环来显示某个字段的所有结果？

1 个答案: