git-hook to prevent pushing php-errors

pre-push.hook.sh

#!/bin/sh

# An example hook script to verify what is about to be pushed.  Called by "git
# push" after it has checked the remote status, but before anything has been
# pushed.  If this script exits with a non-zero status nothing will be pushed.
#
# This hook is called with the following parameters:
#
# $1 -- Name of the remote to which the push is being done
# $2 -- URL to which the push is being done
#
# If pushing without using a named remote those arguments will be equal.
#
# Information about the commits which are being pushed is supplied as lines to
# the standard input in the form:
#
#   <local ref> <local sha1> <remote ref> <remote sha1>
#

remote="$1"
url="$2"

while read local_ref local_sha remote_ref remote_sha
do
	git diff-tree --no-commit-id --name-status -r $remote_sha..$local_sha

	git diff-tree --no-commit-id --name-only --diff-filter=ABCMRTUXB -r $remote_sha..$local_sha |\
	grep '.php$' |\
	xargs -n 1 echo |\
	xargs -I% sh -c "git show $local_sha:% | php -l >/dev/null" || exit 1
done

exit 0