php禁止用下载工具来下载文件

2015/02/10 38893

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<?php       
if(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE 8.0"))       
echo "Internet Explorer 8.0"; // 这里可以写其他的执行命令       
else if(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE 7.0"))       
echo "Internet Explorer 7.0";       
else if(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE 6.0"))       
echo "Internet Explorer 6.0";    
else if(strpos($_SERVER["HTTP_USER_AGENT"],"Firefox/3"))       
echo "Firefox 3";       
else if(strpos($_SERVER["HTTP_USER_AGENT"],"Firefox/2"))       
echo "Firefox 2";       
else if(strpos($_SERVER["HTTP_USER_AGENT"],"Chrome"))       
echo "Google Chrome";       
else if(strpos($_SERVER["HTTP_USER_AGENT"],"Safari"))       
echo "Safari";       
else if(strpos($_SERVER["HTTP_USER_AGENT"],"Opera"))       
echo "Opera";       
else echo $_SERVER["HTTP_USER_AGENT"];    
?>

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<?php 
if(strpos($_SERVER["HTTP_USER_AGENT"],"MSIE"))echo"禁止用IE浏览器或其他下载工具下载"; 
else header("Content-Disposition: attachment; filename='jquery.js'");//写上文件名 
?>