php合并js请求的例子

//页面保存为js.php
//前台请求范例http://localhost/js.php?f=1,2
//请求1.js,2.js两个文件
<?php
header("content-type:application/x-javascript");
header("last-modified: " . gmdate("d, d m y h:i:s") . " gmt");
header("cache-control: max-age=".(86400*30));
header("expires: " .gmdate("d, d m y h:i:s",time()+86400*30). " gmt");

if($_get['f'])
{
 $url = parse_url($_server['request_uri']);

 $arr_f = array_unique(explode(',',preg_replace("/.+//",'',$_get['f'])));

 foreach($arr_f as $v)
 {
  if(!empty($v))
  {
   include('./'.$v.'.js');
   echo "n";
  }
 }
}
?>