Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
I typically wrap file paths with the PHP function escapeshellarg(). That function does the appropriate escaping for whatever system you run it on (Win/*NIX) so it also makes your script more portable.