php implementation file download simple example of code implementation file download

public function downloads($name){
$name_tmp = explode("_",$name);
$type = $name_tmp[0];
$file_time = explode(".",$name_tmp[3]);
$file_time = $file_time[0];
$file_date = date("Y/md",$file_time);
$file_dir = SITE_PATH."/data/uploads/$type/$file_date/"; 
if (!file_exists($file_dir.$name)){
 header("Content-type: text/html; charset=utf-8");
 echo "File not found!";
 exit; 
} else {
 $file = fopen($file_dir.$name,"r"); 
 Header("Content-type: application/octet-stream");
 Header("Accept-Ranges: bytes");
 Header("Accept-Length: ".filesize($file_dir . $name));
 Header("Content-Disposition: attachment; filename=".$name);
 echo fread($file, filesize($file_dir.$name));
 fclose($file);
}
}

Example 2: Code implementation file download

Usually, url is called to download, but when ie can recognize the open file, such as downloading a picture, html web page, etc., it is necessary to program to achieve this. The following php code can solve this problem:

<?
if( empty($_GET['FileName'])|| empty($_GET['FileDir'])|| empty($_GET['FileId'])){
    echo'<script> alert(" Illegal connection  !"); location.replace ("index.php") </script>'; exit();
}
$file_name=$_GET['FileName'];
$file_dir=$_GET['FileDir'];
$FileId=$_GET['FileId'];
$file_dir = $file_dir."/";
if   (!file_exists($file_dir.$file_name))   {   // Check if the file exists   
  echo   " File not found ";  
  exit;    
  }   else   {  
$file = fopen($file_dir . $file_name,"r"); //  Open the file 
//  Input file label 
Header("Content-type: application/octet-stream");
Header("Accept-Ranges: bytes");
Header("Accept-Length: ".filesize($file_dir . $file_name));
Header("Content-Disposition: attachment; filename=" . $file_name);
//  Output file content 
echo fread($file,filesize($file_dir . $file_name));
fclose($file);
exit();
}
?>