<?php
	header("Content-type:text/html;charset=utf-8");
		$row = '';
		$sql = "UPDATE dede_archives SET senddate = case id"."<br />"; //前缀请自行更改
		for($x=1; $x<=10; $x++) { //开始id 结束id
			$num = rand(1548950400, 1578751863);//时间随机数 开始时间戳,结束时间戳
			$row .= " when $x then $num <br />";
		}
		$sql .= $row .'end';
		echo $sql;
?>