php操作mysql示例备忘录
$query = "INSERT INTO Profile (userName) VALUES ('{$userName}')";
$this->db->query($query);
$userId = sprintf("%d", $this->db->insert_id);
$this->db->commit();
2. 数据库中如果有,则更新,没有则插入
$query = "INSERT INTO BookRead (userId, bookId, count) VALUES ($_userId, $_bookId, 1) ON DUPLICATE KEY UPDATE count = count + 1";
$this->db->query($query);
$this->db->commit();
3. 更新
$query = "UPDATE Profile Set deviceToken='{$_token}' WHERE userId=$_userId";
$this->db->query($query);
$this->db->commit();
4.查询1,操作需要操作的字段
$stmt = $this->db->prepare('SELECT userId, passWord FROM Profile WHERE userName=?');
$stmt->bind_param("s", $_userName);
$rs = $stmt->execute();
$stmt->bind_result($_userId, $_passWord);
while ($stmt->fetch()) {
break;
}
$stmt->close();
查询2,返回查询结果数组
$query = "SELECT name, points FROM Profile WHERE 1 ORDER BY points DESC LIMIT $_from, $_to";
if ($result = $this->db->query($query)) {
while ($row = $result->fetch_row()) {
$ret = array (
"name" => $row[0],
"points" => $row[1],
);
}
$result->close();
}