Fix for integer division in PHP codegen.
Fix for integer division in PHP codegen.

jsanjuas/Nim,jsanjuas/Nim,russpowers/Nim,endragor/Nim,mbaulch/Nim,singularperturbation/Nim,jfhg/Nim,tulayang/Nim,endragor/Nim,singularperturbation/Nim,tulayang/Nim,singularperturbation/Nim,jsanjuas/Nim,dom96/Nim,jfhg/Nim,singularperturbation/Nim,jsanjuas/Nim,haiodo/Nim,mbaulch/Nim,haiodo/Nim,russpowers/Nim,zachaysan/Nim,russpowers/Nim,haiodo/Nim,russpowers/Nim,jfhg/Nim,endragor/Nim,zachaysan/Nim,dom96/Nim,mbaulch/Nim,jfhg/Nim,haiodo/Nim,haiodo/Nim,dom96/Nim,dom96/Nim,zachaysan/Nim,tulayang/Nim,jfhg/Nim,jsanjuas/Nim,jfhg/Nim,endragor/Nim,jfhg/Nim,haiodo/Nim,tulayang/Nim,zachaysan/Nim,endragor/Nim,jsanjuas/Nim,dom96/Nim,singularperturbation/Nim,zachaysan/Nim,russpowers/Nim,dom96/Nim,tulayang/Nim,dom96/Nim,zachaysan/Nim,endragor/Nim,haiodo/Nim,mbaulch/Nim,singularperturbation/Nim,mbaulch/Nim,tulayang/Nim,endragor/Nim,mbaulch/Nim,jsanjuas/Nim,russpowers/Nim,russpowers/Nim,singularperturbation/Nim,mbaulch/Nim,zachaysan/Nim