Question

我正在尝试查询格式正确。

我需要所有结果在前面加上“$”，并且在结尾处添加“/mo.*”时要小于300。它没有做我想做的事。有什么建议吗？提前谢谢！

public function get_under300_specials() {
    $this->db->select(' vehicle_specials.type, vehicle_specials.stock_number, inventory.year, inventory.make, inventory.model, inventory.trim, vehicle_specials.price, vehicle_specials.msrp, vehicle_specials.was, vehicle_specials.description, inventory.photos')->from('vehicle_specials')->join('inventory', 'inventory.stock_number = vehicle_specials.stock_number');

    $this->db->where("vehicle_specials.price < 300");
    $this->db->where('status','active');
    //return $this->db->get();

    $results = $this;
    foreach ($results as $key => $result) { // Format number
        $results[$key]['price'] = '$' . number_format($result['price']) . (($result['price'] < 300) ? '/mo.*' : '');
    }
    return $results->db->get();
}

Answer 1

在不知道您正在使用什么框架的情况下，我认为问题是您在尝试格式化数据之前没有从数据库获取数据。

public function get_under300_specials() {
    $this->db->select(' vehicle_specials.type, vehicle_specials.stock_number, inventory.year, inventory.make, inventory.model, inventory.trim, vehicle_specials.price, vehicle_specials.msrp, vehicle_specials.was, vehicle_specials.description, inventory.photos')->from('vehicle_specials')->join('inventory', 'inventory.stock_number = vehicle_specials.stock_number');

    $this->db->where("vehicle_specials.price < 300");
    $this->db->where('status','active');

    $results = $this->db->get(); // this might require a table to get data from

    // assuming get()-method returns array, not object
    // futher more, if there is 'price' field already in object, it would be good practice to not to overwrite it if not necessary. Thus, using price_str

    foreach ($results as $key => &$result) { // Format number
        $result['price_str'] = '$' . number_format($result['price']);
        if( intval($result['price']) < 300 )
            $result['price_str'] .= "/mo.*"; 
    }

    return $results;
}

如何正确使用number_format？

1 个答案: