PHP Download File

PHP enables you to download file easily using built-in readfile() function. The readfile() function reads a file and writes it to the output buffer.

PHP readfile() function

Syntax

int readfile ( string $filename [, bool $use_include_path = false [, resource $context ]] )

$filename: represents the file name

$use_include_path: it is the optional parameter. It is by default false. You can set it to true to the search the file in the included_path.

$context: represents the context stream resource.

int: it returns the number of bytes read from the file.

PHP Download File Example: Text File

File: download1.php

<?php
$file_url = 'http://www.javatpoint.com/f.txt';
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: utf-8"); 
header("Content-disposition: attachment; filename=\"" . basename($file_url) . "\""); 
readfile($file_url);
?>

PHP Download File Example: Binary File

File: download2.php

<?php
$file_url = 'http://www.myremoteserver.com/file.exe';
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary"); 
header("Content-disposition: attachment; filename=\"" . basename($file_url) . "\""); 
readfile($file_url);
?>

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