Hello all,

I wrote a PHP program and I want to add a line of text to the bottom of a page as a copyright. I don't want my customers to be able to remove this line. Would it be possible to make it so if they remove it, the program no longer works? or make it complicated to remove?

Any help greatly appreciated.

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Global Domains Intl

In this case, you would immediately come into the license system. This would mean you are going to replace certain characters from a string to make it irretrievable, but convertible to plain text once again.

Certain programs just have a license file, but a certain function would say is_licenseced() and would return true or false. To go around this, is to simply make another function that would say:Once you done that, it can be hacked again. The most logic way to protect your program, is to encrypt it with Zend, and make sure you upload the CMS/program on a webserver that has a Zend module installed. You can't read it, but Zend can convert it.

One way or the other, scriptkiddies always find a way around it. Just make sure you protect it from the avarage joe.

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"Life is a bitch, take that bitch on a ride"

Best way to do this is to obfuscate your source files.

IONCube:
PHP Encoder, protection, installer and performance tools from ionCube: ionCube PHP Encoder

Zend Guard:
Zend Guard - Protect Your IP & Generate More Revenue - Zend.com

Those two are what most people use, although they are quite expensive. There is however a free alternative:
Free PHP Encoder - Free PHP Code Encryption and Obfuscation Service!

Don't know how good it is or indeed how secure it is, but it should stop most of the muppets.

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mysql> SELECT * FROM `users` WHERE `users`.`clue` > 0;
Empty set (0.00 sec)

Here is a way you could it.
Example:
Result:
Copyright My Site

You use something like this - Link

to encode your text into Base64 and replace 'Q29weXJpZ2h0IE15IFNpdGU=' with your Base64 code encrypted using Base64 Encode option, and PHP will decode it with the base64_decode function. The user does not see what the value of it is because it is already encrypted, and you don't use the base64_encode function to display the value. Then you just echo $c or whatever your string name is in the footer or where you want the copyright.

That's the first thing I do when I search for encrypted copyrights.

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"Life is a bitch, take that bitch on a ride"

Well...you could hide a file with the base64 copyright and name it something not obvious and include it into a common.php file which you include in all your files and echo $c or your string name to show the copyright. That would be kinda hard to to find and free. Compared to paying for Zend or ionCube.

can't you maybe do like this and now i am just thinking out with no regards to true life and fantasi :P

you make a script hum called like test.php
then you do maybe a other script called encrypt.php
and then in the encrypt you do include and then you do sha1/md5 on the include some how :P hihi :) just a thought

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Codefreek's - News Letter, Tech, & some random ramblings

I've seen people base64 encode their code and copyright notices, but if someone wants it bad enough they will get it. Your average Joe will have no idea they can just write a script to decode the code and just modify that into the current script, removing the copyright notice from the encoding, but is it worth it?

If someone has to go through those lengths, then so be it, they will and it will find its way to the Warez forums. Regardless, these are people that probably wouldnt pay anyways. Best to do it is to create information about the domain for each paying client, and when you find a site using your script, check your database for the license. Contact their ISP if using a warez script.

Or, if you wanna be really sneaky and dirty, and I don't know whether this would be a good idea or not ( though it would be funny and possibly teach them a lesson ), create a 'nulled' version of your script and write an exploit into it that wouldnt exist in the original. Catch someone using it and drop their site, making sure you can leave them a nice little message not to use nulled scripts. Would be embrassing for them to have their visitors see that.

nice help..... for me too

though i used PHPLockIt in one of my project in such position.