Question

有人可以建议一个较短的相同代码吗？

<?php
header("Content-type: application/doc");
basename($_GET["path"]));
$name = $_GET["name"];
header("Content-Disposition: attachment; filename='".$name.".doc");
header("Content-Transfer-Encoding: quoted_printable");
header('Pragma: no-cache');
header('Expires: 0');

header("Cache-Control: public");
header("Content-Description: File Transfer");

header('Content-Transfer-Encoding: binary');
header("Content-type: application/force-download");
header('Content-Type: application/octet-stream');

readfile($_GET["path"]);

Answer 1

代替几个，或者您可以尝试在范围之间使用

CASE when substr({location}, -2) ='00' 
  or cast(substr({location}, -2)) AS UNSIGNED )between 10 and 13 then '1'
    when cast(substr({location}, -2)) AS UNSIGNED) between 38 and 47 then '2'
  else '3'
end

Answer 2

如果使用的数据库支持正则表达式，则可以大大简化此过程。例如，在MySQL中：

(CASE WHEN  {location} REGEXP '00$|010$|011$|012$|013$' THEN '1'
      WHEN  {location} REGEXP '38$|039$|040$|041$|042$|043$|044$|046$|047$' THEN '2'
      ELSE '3' 
 END)

如何提高我的代码效率（初学者：）

2 个答案: