php，$sql = "SELECT * FROM users WHERE age > 18";，$result = $conn>query($sql);，`，，这段代码会从users`表中筛选出年龄大于18岁的用户。php，$sql = "SELECT * FROM users WHERE age > 18";，$result = $conn>query($sql);，`，，这段代码会从users`表中筛选出年龄大于18岁的用户。Powered By Z-BlogPHP 1.7.3
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