I compiled phalcon 1.2.3 for Windows. As stated in the title, it's for the VC11 x64 5.5 version (I compiled it with 5.5.1, but it should work with 5.5.2, 5.5.3 and even 5.5.0 as well).
Here ist the github link (sorry, I have no other option to distribute it elsewhere): https://github.com/boast/phalcon-win
VirusTotal Link (as it is a .dll file...): https://www.virustotal.com/en/file/8cec60c66f846a99ac0b6a6010f336f6e9fcbf2f251673e3257fbfd1a209f367/analysis/1379188332/
Checksums: SHA-256: 8cec60c66f846a99ac0b6a6010f336f6e9fcbf2f251673e3257fbfd1a209f367 MD5: 1c7f08ce5fc88780e69670c057046369 SHA-1: f3b93c1639d27b22cfc2a33c901f542b21e4bea9