php 实现文件下载
//文件下载 function download($file_dir,$file_name) //参数说明: //file_dir:文件所在目录 //file_name:文件名 { $file_dir = chop($file_dir);//去掉路径中多余的空格 //得出要下载的文件的路径 if($file_dir != '') { $file_path = $file_dir; if(substr($file_dir,strlen($file_dir)-1,strlen($file_dir)) != '/') $file_path .= '/'; $file_path .= $file_name; } else{ $file_path = $file_name; } //判断要下载的文件是否存在 if(!file_exists($file_path)) { echo '对不起,你要下载的文件不存在。'; return false; } $file_size = filesize($file_path); header("Content-type: application/octet-stream"); header("Accept-Ranges: bytes"); header("Accept-Length: $file_size"); header("Content-Disposition: attachment; filename=".$file_name); //echo file_get_contents($file_path); $fp = fopen($file_path,"r"); $buffer_size = 1024; $cur_pos = 0; while(!feof($fp)&&$file_size-$cur_pos>$buffer_size) { $buffer = fread($fp,$buffer_size); echo $buffer; $cur_pos += $buffer_size; } $buffer =@fread($fp,$file_size-$cur_pos); echo $buffer; fclose($fp); return true; }
页面处理部分
$dir = "../main/trade_log"; // Open a known directory, and proceed to read its contents if (is_dir($dir)) { $filename=array(); if ($dh = opendir($dir)) { while (($file = readdir($dh)) !== false) { if ($file!="." && $file!=".." && $file!=".svn") { $filename[]=$file; } } closedir($dh); } } if(isset($_GET['logname'])) { download("../main/trade_log",$_GET['logname']); exit; } $smarty->assign("trade_log_list",$filename);
注意这块
download("../main/trade_log",$_GET['logname']);
exit;
一定要加exit
否则下载的文件display的部分也要输出
教程链接:http://www.phprm.com/code/2b3382623f329abb73413b38c6535fbe.html
随意转载~但请保留教程地址★