Question

我有一个函数，我根据mysqli查询构建一个数组：

if ($type == 'item') {

    $the_query = "SELECT ID, SKU from store_items WHERE Qty > 0";

} else if ($type == 'brim') {

    $the_query = "SELECT ID, BrimID from store_item_brims";

} else if ($type == 'condition') {

    $the_query = "SELECT ID, CondDesc from store_item_conditions";

} else if ($type == 'grade') {

    $the_query = "SELECT ID, GradeDesc from store_item_grades";

}

$query = $db->query($the_query);

    if ($query->num_rows > 0) { 

        $results = array();

        while ($returned = $query->fetch_assoc()) {

            array_push($results, $returned);

        }
    }

    return $results;

例如，如果$type为item，我会有一个类似的数组：

$array['ID'] // Some ID
$array['SKU'] // The SKU

如果$type为brim，我会：

$array['ID'] // Some ID
$array['BrimID] // A brim ID

我要做的是修改查询，这样无论如何，生成的数组都会有相同的键，即：

$array['ID']
$array['Value']

因此，无论$type是什么，数组始终都有ID和Value的键。

如何修改这些查询才能执行此操作？

Answer 1

只使用一个别名（最好是一个有意义的别名，而不是我使用的whatever）：

if ($type == 'item') {    
    $the_query = "SELECT ID, SKU as whatever from store_items WHERE Qty > 0";    
} else if ($type == 'brim') {    
    $the_query = "SELECT ID, BrimID as whatever from store_item_brims";    
} else if ($type == 'condition') {    
    $the_query = "SELECT ID, CondDesc as whatever from store_item_conditions";    
} else if ($type == 'grade') {    
    $the_query = "SELECT ID, GradeDesc as whatever from store_item_grades";    
}

PHP：

$array['ID']
$array['whatever']

如何在查询结果

1 个答案: