php - 将结果重新调整为字符串

Question

我目前有以下查询，它给出的结果是 int(0) 我怎样才能得到 0 的结果？

代码:

public function check_manufacturer_id($manufacturer_id)
{
    $table  = $this->_table_products_manufacturers;
    $query  = $this->db->query("SELECT $table.id FROM $table WHERE $table.id = $manufacturer_id");
    $result = $query->num_rows();

    return $result;
}

Answer 1

您可以将类型转换放在变量名称之前，如下所示 return (string)$result;

使用您的代码:

public function check_manufacturer_id($manufacturer_id)
{
    $table  = $this->_table_products_manufacturers;
    $query  = $this->db->query("SELECT $table.id FROM $table WHERE $table.id = $manufacturer_id");
    $result = $query->num_rows();

    return (string)$result;
}