Information for installing this PECL extension may be
found in the manual chapter titled Installation
of PECL extensions. Additional information such as new releases,
downloads, source files, maintainer information, and a CHANGELOG, can be
located here:
» https://pecl.php.net/package/yaf.
Yaf has no external dependencies. Install it with:
$ pie install laruence/yaf
$ git clone https://github.com/laruence/yaf.git
$ cd yaf
$ phpize
$ ./configure --enable-yaf
$ make && make install