recursively copy files form one dir to another - case insensitive

case-insensitive-rcopy.php

<?php

$src = $argv[1];
$dest = $argv[2];

if (!$src || !$dest) {
    die("Need a source and destination");
}

$src = rtrim($src, '/') . "/";
$dest = rtrim($dest, '/') . "/";

$files = getDirContents($src, $src);
$existing = getDirContents($dest, $dest);

foreach ($files as $file => $fullFile) {
    if (array_key_exists($file, $existing)) {
        echo "$fullFile => {$existing[$file]}\n";
        rename($fullFile, $existing[$file]);
    }
}

function getDirContents($dir, $replace, &$results = array()){
    $files = scandir($dir);

    foreach($files as $key => $value){
        $path = realpath($dir.DIRECTORY_SEPARATOR.$value);
        if(!is_dir($path)) {
            $results[strtolower(str_replace($replace, '', $path))] = $path;
        } else if($value != "." && $value != "..") {
            getDirContents($path, $replace, $results);
        }
    }

    return $results;
}