<?php
function down_file($file_name,$file_sub_dir){
$file_name=iconv("utf-8","gb2312",$file_name);
$file_path=$_SERVER['DOCUMENT_ROOT'].$file_sub_dir.$file_name;
if(!file_exists($file_path)){
echo "文件不存在";
return;
}
$fp=fopen($file_path,"r");
$file_size=filesize($file_path);
/*if($file_size>30){
echo "<script language='javascript'>window.alert('文件过大');</script>";
return;
}*/
header("Content-type: application/octet-stream");
header("Accept-Ranges: bytes");
header("Accept-Length: $file_size");
header("Content-Disposition: attachment; filename=".$file_name);
$buffer=1024;
$file_count=0;
while(!feof($fp) && $file_size-$file_count>0){
$file_data=fread($fp,$buffer);
$file_count+=$buffer;
echo $file_data;
}
fclose($fp);
}
down_file("answer.jpg","/http/");
?>
成功下载,成功打开:
然后我在第一张图的fileDown.php文件中把最后一句
down_file("answer.jpg","/http/");
改成
down_file("答案.jpg","/http/");
并在站点中把图片的名称由“answer.jpg”改成“答案.jpg”,我重新刷新地址:
http://localhost/http/fileDown.php
结果它给我弹出这个对话框:
为什么文件名不是“答案.jpg”呢?最后下载下来的也不是图片啊。
请问是什么原因呢?