php with imagick - help needed

[slack_user]

Hi
I am running Slackware10.2 and since now had no problems with A/P/M.
Today I tried to install PHP 4.4.0 with the extension module imagick.
First I build from source php and imagick. Everything was ok the php was working fine with images. But  when I tried to start Apache with this PHP i found there is no libphp4.so . So Apache was unable to start.
Then I used the php binary for Slackware and put imagick as an extension

extension=imagick.so

now the phpinfo says there is imagick module but when I run a script it says:

Fatal error</b>:  Call to undefined function:  imagick_readimage()

and it is the same for all imagick functions.
Please help ?
  :)