little tool for deploying git project over ftp

prepdeploy.php

<?php
//ftp deploy helper (git only)

$targetDir = "../webdeploy";
//$lastDeploy = "bd777c31090f9e22aef12e61f7ba64c39f09f5d0";
if (isset($argv[1])) {
    $lastDeploy = $argv[1];
}

$cfgWarning = array();

prepareDeployDir($targetDir);
$files = getFileDiff($lastDeploy);

printn("[deploy] copyingfiles: ");
//print_r($files);
foreach($files as $file) {
    $dir = dirname($file);
    $target =$targetDir . "/" . $file;
    $basename = basename($file);
    printn("\t[cp]\t" .  basename($file). "\tin " . dirname($file) );
    if (!file_exists($targetDir . "/" . $dir)) {
        mkdir ($targetDir . "/" . $dir, 0777,  true);
    }
    exec("cp $file $target");
    //check if we have to upload changed config files
    if (strpos($dir, 'config') !== false) {
        $cfgWarning[] = $file;
    }
}

//config deploy warning
if (count($cfgWarning) > 0) {
    printn("[WARN] config files exported, check changes!!");
    foreach ($cfgWarning as $wrnFile) {
        printn("\t" . $wrnFile);
    }
}

//FIXME: handle symlinks


function getFileDiff($lastDeploy) {
    $diffOutput = array();
    exec("git diff --name-only $lastDeploy HEAD", $diffOutput);
    return $diffOutput;
}

function prepareDeployDir($dir) {
    if (file_exists($dir)) {
        printn("[deploy] removing old target dir $dir");
        exec("rm -rf $dir");
    } 
    mkdir($dir, 0777, true);
}

function printn($str = "") {
    print $str."\n";
}