PHP文件下载

根据Mobile类型下载文件：

 

***************************checkUA.php***************************

<?php
/**
 * 函数名称: getUA
 * 函数功能: 取UA
 * 输入参数: none
 * 函数返回值: 成功返回号码，失败返回false
 * 其它说明: 说明
 */
function getUA() {
 if (isset ( $_SERVER ['HTTP_USER_AGENT'] )) {
  Return $_SERVER ['HTTP_USER_AGENT'];
 } else {
  Return false;
 }
}

/**
 * 函数名称: isMobileSystem
 * 函数功能: 判断是否是手机系统
 * 输入参数: none
 * 函数返回值: 成功返回号码，失败返回false
 * 其它说明: 说明
 * /
function isMobileSystem() {
 $agent = $_SERVER ['HTTP_USER_AGENT'];
 if (preg_match ( '/ipad/i', $agent )
 || preg_match ( '/iphone\s*os/i', $agent )
 || preg_match ( '/android|wp7|wp8|surface|nokia|sumsang/i', $agent )
 || preg_match ( '/wbxml|wml/i', $_SERVER ['HTTP_ACCEPT'] )) {
  return true;
 }
 
 return false;
}

?>

 

***************************checkUA.php***************************

<?php
function specialDown($filename) {
 $fullFileName = "E:/files/". $filename;
 if (! file_exists ( $fullFileName )) {
  printf ( "<br>文件不存在，下载失败" );
 } else {
  // 打开文件
  $file = fopen ( $fullFileName, "r" );
  $filesize = filesize ( $fullFileName );
  header ( "Contnt-type: application/octet-stream" );
  header ( "Accept-Range:bytes" );
  header ( "Accept-Length" . $filesize );
  header ( "Content-Transfer-Encoding:binary" );
  header ( "Content-Disposition:attachment;filename=" . $filename );
  header ( "Pragma:no-cache" );
  header ( "Expires:0" );
  
  // 输出内容
  echo fread ( $file, $filesize );
  fclose ( $file );
  exit ();
 }
}

function normalDown($filename){
 header("Location:http://localhost:12580/files/".$filename);
 exit();
}

//specialDown ( "testb.exe" );
normalDown("testb.exe");
?>