$docRoot = $_SERVER['DOCUMENT_ROOT'];

$source = file($docRoot . '/upload/langs/handFlower_source.csv');
$clean = file($docRoot . '/upload/langs/lang_clean_hm_utf8.csv');
$transl = file($docRoot . '/upload/langs/translated.csv');

unset($clean[0], $transl[0]);

$cleanArr = [];
foreach($clean as $row)
{
    $row = substr($row, 0, strlen($row) - 3);
    $cleanArr[] = $row;
}
$finishArr = [];
foreach($transl as $row)
{
    $row = explode(';', substr($row, 0, strlen($row) - 1));
    if(in_array(trim($row[0]), $cleanArr))
        $finishArr[$row[0]] = trim($row[1]);

}
$sourceArr = [];
foreach($source as $row)
{
    $newRow = explode(';', substr($row, 0, strlen($row) - 1));
    $cleanRow = strtolower(substr($newRow[2], 1, strlen($newRow[2]) - 2));
    if(isset($finishArr[$cleanRow]))
    {
        $newRow[3] = '"' . $finishArr[$cleanRow] . '"';
        $sourceArr[] = implode(';', $newRow);
    }
}

foreach($sourceArr as $row)
{
    echo $row;
}