php - 附加未知数量的 WHERE 参数

Question

我正在尝试找到最合乎逻辑(一如既往)的方式来接受查询中的 WHERE 参数列表。我遇到了如何确定它是否是数组末尾的常见问题，我需要添加或不添加另一个“AND”

$params = array(
   array("id","=","1"),
   array("id","!=","2"),
   array("name","=","test"),
)

someQuery($params);

private function someQuery($where = null){
    $this->q = "SELECT stuff FROM table";
    if ($where){
        $this->q .= " WHERE ";
        foreach($where as $x){
           $this->q .= implode(" ", $x);
           if (!notLastElement) $this->q .= " AND ";
        }
    }
}

我似乎建议使用 end()、reset()、slice、带计数器的 for 循环等。但似乎没有人同意一个答案。我相信 end() 不会在我的循环中工作。感谢您的帮助。

Answer 1

它应该像内爆参数数组一样简单，例如 -

private function someQuery($where = null){
    $this->q = "SELECT stuff FROM table";
    if ($where){
        $parameters = array();
        foreach($where as $x){
            $condition = implode(' ', $x); // I'd review this - why are you forming your parameter array the way that you are?
            array_push($parameters, $condition);
        }
        $conditions = implode(' AND ', $parameters);
        $this->q .= ' WHERE ' . $conditions; // only concatenate once
    }
}