The PSR extension is required to be loaded before Phalcon. Please ensure that it is available in your system
Using Pecl this extension will be automatically installed in your system The Pecl installation method is available for Windows, Linux and MacOS. Under windows pre-compiled dll files will be used. Under Linux and MacOS it will compile phalcon locally so it could be faster to use a different installation method on these platforms. To install using Pecl make sure you have pecl/pear installed.
pecl channel-update pecl.php.net pecl install phalcon
Windows DLLs can be downloaded from our Github release page here
To use phalcon on Windows you can download a DLL library. Edit your php.ini, append at the end, and restart your webserver to load the extension. More.