Question

我有一个简单的模型：

class Model
{
    public function find($name) {
        return mysqli_query($con, 'select * from table where name = "'.$name.'"');
    }

     public function first($rows) {
        foreach ($rows as $row) {
            return $row;
        }
    }
}

我想做这样的事情：

$model = new Model;
$model->find('test')->first();

但它不能正常工作

Fatal error: Call to undefined method mysqli_result::first()

如果我使用$model->first($model->find('test'))，它会很有效，但它真的很难看。我应该更改什么来实现$model->find('test')->first()调用？

Answer 1

(1995.6 < 3300)

您现在可以使用class TestModel{ private $con; private $results; /** * Why not use dependency injection here. It will decouple the classes. * * @param \DatabaseConnection $con */ public function __construct(DatabaseConnection $con) { $this->con = $con; } public function find() { $this->results = mysqli_query($this->con, 'SELECT * FROM `table` where `name` = ' . $name) // Again you should really bind these. return $this; } public function where($field, $field_value) { $this->results = mysqli_query($this->con, 'SELECT * FROM `table` where `' . $field . '` = ' . $field_value); // Again you should really bind these. return $this; } public function first() { foreach ($this->results as $row) { return $row; } } }

php mvc模型调用函数对数据结果

1 个答案: