pre-commit git-hook to check for debug messages

pre-commit

#!/usr/bin/php
<?php
#for debug/scripting
#use --no-verify - like this:
#git commit -m "init" --no-verify
echo "============= RUNNING PRE-COMMIT HOOK\n\n";
$forbidden=array(
    'var_dump',
    'print_r',
    'echo',
    'print',
    'debug_'
);

//run git, it can be done without /tmp/, but i'm too lazy to do it today
exec('git diff master --cached --no-color > /tmp/stage.diff');
exec('git diff master --no-color >> /tmp/stage.diff');
$data=preg_split("/[\r\n]+/", file_get_contents('/tmp/stage.diff'));
$filenames=array();
$errors = array();
foreach ($data as $k=>$v) {
    if (preg_match_all("/\+\+\+ b\/(.*)/", $v, $filenameMatches)) {
        if(isset($filenameMatches[1][0])){
            $filename = $filenameMatches[1][0];
        }
    }
    foreach ($forbidden as $fk=>$fv) {
        $pattern = '/^\+.*'.$fv.'\s*/'; 
        if (preg_match($pattern, $v)){
            $errors[]="\n>>>$fv in [".$filename."]\n>>> $v \n";
        }
    }
}

$errors = array_unique($errors);
if (count($errors)){
    foreach ($errors as $k=>$v){
        echo $v;
    }
    exit(1);
}