My current big project in Python is XanderBot for #thepokecommunity IRC channel on SystemNet, and let me tell you, it's been an absolute blast writing it along with the Twisted IRC interface. :)
I think my most recent project in C was a command-line based free space finder for ROM hacks that functioned as a replacement for [supporter]HackMew[/supporter]'s FSF, which forced a stupid-as-hell skip interval and refused to open a ROM while any other program was using it (Stupid, I know). More recently though that project kind of became inactive, as I never finished it, unfortunately. :/ ATM I cannot recall any active PHP projects of mine~
My last large-scale programming project before XanderBot was actually a C program called AdvanceScript, which had huge potential but bottomed out after I encountered a roadblock of some sort (can't remember what). It functioned with a command-line backend compiler, command-line UI that allowed you to select pre-written scripts from file, and a GUI with a built-in IDE. It had two language modes: Standard was a new language format that functioned a lot like a modified version of C, and then Classic which had two sub-modes for each PKSV-UI and XSE. At compile time it would write the script's bytecode to a temp binary file and then insert that into the ROM. The GUI had plans to allow importation of custom styles to allow the changing of how syntax highlighting looks, along with font formatting customization and whatnot. It was also going to be compiled into both Windows x86 and x64 binaries with possibly a port to Linux later on, but I don't know if I'd ever get that far if I picked back up on it. :/