Today I’ll show you how to get a user’s ip, stick it in a text file, and have the download it all without the text file being stored on your server for more than a few seconds.
Step 1: Getting the I.P Address
To get the ip address, we use this code: $_SERVER['REMOTE_ADDR'];
So when we put it as a varible:
$ip = $_SERVER['REMOTE_ADDR'];
Step 2: Creating the file
Now that we have the user’s ip address stored in a varible, we want to put it in a file.
So first, we need to create the file: fopen($ip, 'w') or die("die");
If you notice, we are using hte person’s ip address for the file name.
Now here is the final piece of that code: $file = fopen($ip, 'w') or die("die");
Step 3: Writing to the file
So we have the file created and now we need to write to it. Use this code to do so: fwrite($file, $ip);
Note that it writing the ip address to our file
Step 4: Close it
Not much for this: fclose($file);
Step 5: Forcing it
Now that we have the file created and with the ip adress in it, we have to make the browser be “forced” into downloading it
$filepath = "/home/manywor/public_html/phptest/";
$file = $filepath . $ip; header("Content-type: application/force-download");
header("Content-Transfer-Encoding: Binary"); header("Content-length: ".filesize($file));
header("Content-disposition: attachment;filename=\"".basename($file)."\""); readfile($file);
I’ll explain all that in a later tutiral.
Step 6: Deleting the file
To delete the file, all we need to do is this: unlink($ip);
Note that it deletes the file named after that ip adress
Final Code
//Get the IP Address of the user
$ip = $_SERVER['REMOTE_ADDR'];
//Create and close the text file
$file = fopen($ip, 'w') or die("die");
//Write to the text file
fwrite($file, $string);
//Close it fclose($file);
//Force it
$filepath = "/home/manywor/public_html/phptest/";
$file = $filepath . $ip; header("Content-type: application/force-download");
header("Content-Transfer-Encoding: Binary");
header("Content-length: ".filesize($file)); header("Content-disposition: attachment; filename=\"".basename($file)."\""); readfile($file);
//Delete it
unlink($ip);
Final Thoughts
To make the file download as a text file, you’ll need to stick an txt extension on the ip adress. I used this code to do so:
//Replace the dots in it
$ip =str_replace(".","",$ip);
//Turn the IP into a text extention
$extiontion = ".txt";
$ip = $ip .''. $extiontion;
Also, its not secure, so I would clean it up before using it ;)
