Recursive PHP linter

lint.sh

#!/bin/bash

EXITCODE=0

if [[ -z $1 ]]
then
  FILES=app
else
  FILES=$1
fi

for f in $(find $FILES -name '*.php')
do
  php -l $f

  if [ $? -ne 0 ]
  then
    EXITCODE=1
  fi
done

exit $EXITCODE