libmcrypt with php 4.3.5

[kwienken]

I'm trying to encrypt data to be stored in a database. I have installed libmcrypt 2.5.7 and libmcrypt.so is enabled in php.ini but when I restart apache I get the following php waring:

PHP Warning: Unknown(): Invalid library (maybe not a PHP library) 'libmcrypt.so' in Unknown on line 0

I am running php 4.3.5.

Can anyone tell me what I may be doing wrong because I really need to get this working.

Thanks,

Kristy

[olaf]

because the lib is for unix and your php runs on windows?

[kwienken]

I'm on Linux not Window, running RH7.3