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/usr/share/vim/vim74/compiler/php.vim is in vim-runtime 2:7.4.1689-3ubuntu1.

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" Vim compiler file
" Compiler:	PHP CLI
" Maintainer:	Doug Kearns <dougkearns@gmail.com>
" Last Change:	2013 Jun 25

if exists("current_compiler")
  finish
endif
let current_compiler = "php"

if exists(":CompilerSet") != 2		" older Vim always used :setlocal
  command -nargs=* CompilerSet setlocal <args>
endif

let s:cpo_save = &cpo
set cpo-=C

CompilerSet makeprg=php\ -lq
CompilerSet errorformat=%E<b>%.%#Parse\ error</b>:\ %m\ in\ <b>%f</b>\ on\ line\ <b>%l</b><br\ />,
		    \%W<b>%.%#Notice</b>:\ %m\ in\ <b>%f</b>\ on\ line\ <b>%l</b><br\ />,
		    \%E%.%#Parse\ error:\ %m\ in\ %f\ on\ line\ %l,
		    \%W%.%#Notice:\ %m\ in\ %f\ on\ line\ %l,
		    \%-G%.%#

let &cpo = s:cpo_save
unlet s:cpo_save