Question

是否可以使用此功能：

function getProjectData($uid, $what) {
    $sql = "SELECT ? FROM projects WHERE fid = ?";
    $stmt = $this->db->prepare($sql);
    $stmt->execute(array($uid,$what);
    return $stmt->fetch(PDO::FETCH_LAZY);
}

“uid”是用户ID，“what”将是我想要的列，例如“title”所以查询将是：

SELECT title FROM projects WHERE fid = 1

这可能吗？

Answer 1

在PDO中无法替换表和列名称：

看看这里： Can PHP PDO Statements accept the table or column name as parameter?

Answer 2

function getProjectData($uid) {
    $sql = "SELECT * FROM projects WHERE fid = ?";
    $stmt = $this->db->prepare($sql);
    $stmt->execute(array($uid);
    return $stmt->fetch();
}

这样称呼

$proj_data = getProjectData($uid);

然后获得所需的属性

$title = $proj_data[$what];

PDO - 选择来自POST /参数的列

2 个答案: