Question

我想要从两个单独的查询中组合两个数组。我将我的产品存放在两个独立的表格中：一个用于表示名称，描述，价格等一般信息;另外还有各种各样的细节，即服装的尺寸和颜色。

所以我的数据库的结构如下：

products table:
p_id | title | descr | etc

product_attrs table:
attr_id | products.p_id | name | value

其中name和value可以是name = Size value = Large

如果我尝试在一个查询中获取产品的所有详细信息，请执行以下操作：

this->db->select('products.title,
                           p.description,
                           p.price,
                           p.stock,
                           p.name,
                           p.value');
        $this->db->from('p');
        $this->db->where('p.p_id', $id);
        $this->db->join('product_attrs', 'product_attrs.product_id = p.p_id', 'inner');
        $result = $this->db->get();

        return $result->result_array();

我得到一个数组，其中填充了该产品的product_attributes表中的名称/值对的数量。因此，如果有一个产品的5个属性，我会像这样回复5次：

Array ( [0] => Array ( [title] => Modest Swimsuit - Full body [description] => UV +50 Protection - Chlorine Resistant - Water Resistant - Quick Drying - Maximum Breathe Ability- Sea Water Resistant [price] => 59.95 [stock] => 20 [name] => Brand [value] => Modestly Active Swimwear ) [1] => Array ( [title] => Modest Swimsuit - Full body [description] => UV +50 Protection - Chlorine Resistant - Water Resistant - Quick Drying - Maximum Breathe Ability- Sea Water Resistant [price] => 59.95 [stock] => 20 [name] => Colour [value] => Black and Light Blue ) [2] => Array ( [title] => Modest Swimsuit - Full body [description] => UV +50 Protection - Chlorine Resistant - Water Resistant - Quick Drying - Maximum Breathe Ability- Sea Water Resistant [price] => 59.95 [stock] => 20 [name] => size [value] => small ) [3] => Array ( [title] => Modest Swimsuit - Full body [description] => UV +50 Protection - Chlorine Resistant - Water Resistant - Quick Drying - Maximum Breathe Ability- Sea Water Resistant [price] => 59.95 [stock] => 20 [name] => size [value] => medium ) [4] => Array ( [title] => Modest Swimsuit - Full body [description] => UV +50 Protection - Chlorine Resistant - Water Resistant - Quick Drying - Maximum Breathe Ability- Sea Water Resistant [price] => 59.95 [stock] => 20 [name] => size [value] => large ) )

所以我决定将每个表的查询分开，这样我就可以得到一个结果集。但我希望将它们组合在一起，以便我可以将数据作为一个数组返回给Controller并将其显示在我的视图中。这就是我查询这两个表的方法，我只需要一种结合两者结果的方法：

$this->db->select('p.title,
                           p.description,
                           p.price,
                           p.stock');
        $this->db->from('p');
        $this->db->where('p_id', $id);
        $result = $this->db->get();

        $this->db->select('name, value');
        $this->db->from('product_attrs');
        $this->db->where('p_id', $id);
        $result2 = $this->db->get();

如果有人可以请求帮助，我会非常感激。谢谢

编辑：

我现在正在php.net中查看array_merge（）函数，但如果我这样做：

$result = $this->db->get();
        $array1 = $result->result_array();

$result2 = $this->db->get();
        $array2 = $result2->result_array();
        $data = array_merge($array1,$array2);
        return $data;

我得到多个阵列：

Array ( [0] => Array ( [title] => Modest Swimsuit - Full body [description] => UV +50 Protection - Chlorine Resistant - Water Resistant - Quick Drying - Maximum Breathe Ability- Sea Water Resistant [price] => 59.95 [stock] => 20 ) [1] => Array ( [name] => Brand [value] => Modestly Active Swimwear ) [2] => Array ( [name] => Colour [value] => Black and Light Blue ) [3] => Array ( [name] => size [value] => small ) [4] => Array ( [name] => size [value] => medium ) [5] => Array ( [name] => size [value] => large ) )

有没有办法在我的视图中从上面的数组中获取值？

Answer 1

另一种方法是循环遍历第二个结果数组并将值添加到第一个数组。

    // Get products results as an array
    $this->db->select('products.title,
                       products.description,
                       products.price,
                       products.stock');
    $this->db->from('products');
    $this->db->where('product_id', $id);
    $product = $this->db->get()->result_array();

    // Get product attributes as an array
    $this->db->select('name, value');
    $this->db->from('product_attributes');
    $this->db->where('product_id', $id);
    $product_attributes = $this->db->get()->result_array();

    // Loop through the results
    foreach($product_attributes as $attribute) {

         // Add results to original product array
         $product[$attribute['name']] = $attribute['value'];
    }

这应该产生一个这样的数组：

        [title]       => Modest Swimsuit - Full body 
        [description] => UV +50 Protection - Chlorine Resistant - Water Resistant - Quick Drying - Maximum Breathe Ability- Sea Water Resistant 
        [price]       => 59.95 
        [stock]       => 20
        [Brand]       => Modestly Active Swimwear 
        [Colour]      => Black and Light Blue
        [size]        => small

将数组从模型组合并返回到控制器 - CodeIgniter

1 个答案: