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CodeLock is an easy to use and affordable PHP and HTML encryption software Its simple, but very effective...
Codelock is easy to use and is very portable. It does not require any special server configuration for your clients.
CodeLock is an easy to use and affordable PHP and HTML encryption software Try it out!
Want to try it first? Codelock V2 and Tracker have a 15 day trial so you can try it for yourself. To check it out for yourself, click on download...

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"NICE !! Just about sums it all up really. A very elegant solution to a tricky problem - well done." - Campbell (
"...thanks a lot for your help your product is excellent"
- Albert (
"...This script and HTML protection software represents a very effective toolkit for the protection of php scripts and HTML generated by them. Simple installation and offers very good value for money"
- (Mike Wright UK)
"Your products so great and I'm glad I found it"
- Dave K
"your ...Codelock v.2.0 LOOKS GREAT and is really WONDERFUL... THANKS..."
- Stefano M
"Its a very clever script!"
- Zac
"I purchased your product
And love it, it's awesome... Thanks again, for the great product " - Mat

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Installing ZLib  

What is ZLib?

Zlib is designed to be a free, lossless data-compression library for use on virtually any computer hardware and operating system. ZLIB is used as PHP's main compression library and is used to compress your PHP pages by up to 1/3 of their size.

Codelock uses ZLIB as a compression option, but it also uses ZLIB to disguise its encryption algorithm. In other words, if you use the ZLIB compression option, Codelock will also use ZLIB to make your scripts even MORE secure.

More info:

You can get more information at

How to check for ZLib:

To check if your system has ZLIB, create a PHP page with the following line:


Upload your phpinfo page to your server and run it. To check, scroll through the information and look for ZLIB. It should have its own listing with the words: ZLib Support = enabled

How to install ZLib:


If you have PHP 4.3.0 or better, ZLIB is automatically built in. If you have a lower version of PHP, then it is easier to upgrade the PHP rather than trying to configure the ZLIB Module. You can get the latest version of PHP here:


First, you need to download zlib from

Once downloaded, place it in the /usr/local/src directory on your server.

From the shell prompt type:

# cd /usr/local/src
# tar xfz zlib.tar.gz
# cd zlib-1.1.4
# ./configure –-prefix=/usr/local/zlib
# make
# make install


Once ZLIB is installed, you will be able to use ALL of Codelock's options. Though ZLIB is not essential, it is recommended.

For more specific support email:


Works with:
Codelock works windows and linux
Windows, Linux and FreeBSD servers