Well this is turning out to be a pain. I'm on CentOS 6.5.

I saw on the PECL ImageMagick changelog that they added a load of constants for new filters, such as LANCZOS2SHARP. Some testing I did earlier suggested that PhotoShop 6.5 was able to downsize photos with better clarity than my current ImageMagick's best effort of LANCZOS, so I thought I'd try to upgrade to test out the newer filters.

So, first port of call - get source from pecl for 3.2.0RC1. Installed with no problems. But, ah-ha. Although it says it only requires IM 6.2.4, the filters I'm after don't work unless you have 6.6.6+

So I go http://www.imagemagick.org/script/install-source.php to install the newest version.

This is the bit that's puzzled me. It all appears to have installed fined. The tests work fine, passing 40 out of 40. If I run identify -version on the command line it outputs 6.8.9

But if I echo Imagick::getVersion() in PHP it shows 6.5.4, even after restarting php-fpm.

rpm -qa | grep ImageMagick shows that I still have 6.5.4 installed

locate ImageMagic also only seems to show the 6.5.4 one

I feel that the missing link here is ImageMagick-devel, do I need to install that too? How do I go about doing that?

Or do I just need to reinstall the pecl-imagemagick 3.2.0RC1 now that I have the latest IM installed?