这几天抽空看了一下git文档，发现有个hooks的好东西，在开发过程中常常不小心会把一些不想提交的文件给提交进去，也常常在提交代码后发现 文件有语法错误，这样的提交一旦上线后很可能会导致正式环境出现严重的问题。
今天就说一下 pre-commit 这个hook，它会在你执行 git commit 操作的时候触发，如果该hook返回1，那么这次的 commit 将会被终止。
hook 位于 .git/hooks/ 目录下,可以看到很多 .sample 的文件这些都是示例文件，我们自己建一个 pre-commit 文件，里面可以写shell脚本，比如我写了一个检查php语法错误和config文件不可被提交进去的脚本
#!/bin/sh
#
# An example hook script to verify what is about to be committed.
# Called by "git commit" with no arguments. The hook should
# exit with non-zero status after issuing an appropriate message if
# it wants to stop the commit.
#
# To enable this hook, rename this file to "pre-commit".
ROOT_DIR="$(pwd)/"
LIST=$(git diff-index --name-only --diff-filter=ACMR HEAD)
ERRORS_BUFFER=""
for file in $LIST
do
EXTENSION=$(echo "$file" | grep "config.php$")
if [ "$EXTENSION" != "" ]; then
echo "注意：有config文件要提交！如果确定要提交可用 git commit --no-verify 来忽略";
exit 1
fi
EXTENSION=$(echo "$file" | grep ".php$")
if [ "$EXTENSION" != "" ]; then
ERRORS=$(php -l $ROOT_DIR$file 2>&1 | grep "Parse error")
if [ "$ERRORS" != "" ]; then
if [ "$ERRORS_BUFFER" != "" ]; then
ERRORS_BUFFER="$ERRORS_BUFFERn$ERRORS"
else
ERRORS_BUFFER="$ERRORS"
fi
echo "检测到有语法错误的php文件: $file "
fi
fi
done
if [ "$ERRORS_BUFFER" != "" ]; then
echo
echo "Found PHP parse errors: "
echo -e $ERRORS_BUFFER
echo
echo "PHP parse errors found. Fix errors and commit again."
exit 1
else
echo "No PHP parse errors found. Committed successfully."
fi
大功告成，测试一下：
