Simple PHP Download Counter
About the Author
Mike Rogers is a Web Developer who is currently at University studying Web Technologies. He also is the founder of Full On Design. He has several years experience freelancing and you can follow him on Twitter (Rogem002).
Here is a really easy and lightweight way of logging the amount of downloads.
<?php # File created on 25th April 2009 by Mike Rogers (http://www.fullondesign.co.uk/).
## Start defining constants ##
define(LOG_URL, '/home/user/download_logs/'); // Put the location of where you want to put the logs. Make sure this is absolute
# $_GET['ID'] - this is the ID of the file we want. It gets the value from the URL.
## Now set the data you wish to use - this can be moved to an include if you want ##
$file[0] = 'http://www.example.com/file.pdf';
## Define the functions required to update the file.
function update_file($filename, $value){
if(is_writable($filename) && is_readable($filename)){
if(file_put_contents($filename, $value)){
return TRUE;
}
}
return NULL;
}
function pull_file($filename){
if(is_writable($filename) && is_readable($filename)){
return file_get_contents($filename);
}
return NULL;
}
function rebuild_file($filename){
if(is_writable($filename) && is_readable($filename)){
file_put_contents($filename, '1');
}
}
if(is_numeric($_GET['ID'])){ // Meaning the Data sent is safe.
// Build log file URL
$filename = LOG_URL.$_GET['ID'].'.log.txt';
$value = pull_file($filename);
header('location:'.$file[$_GET['ID']]);
// Update logs
if(is_numeric($value)){
update_file($filename, ($value+1));
} else { // Meaning the file does not exist or has been messed with.
rebuild_file($filename);
}
} else {
echo 'Sorry, there was an error.';
}
/* If you want to see how many people have downloaded a file, run something like:
# pull_file(LOG_URL.numberishere.'.log.txt');
/*
You are free to share, modify and use this code for commercial uses. Please give a link back (to http://www.fullondesign.co.uk/ ) if you can, but you don't have you.
I claim no liability for this code, you use it at your own risk.
*/
?>
You can run this by changing the URL that accesses the file. For example:
file.php?ID=0
Feel free to edit and share this code.