CSV date re-formatter

csv-date-reformatter.php

<?php
$data = 'fecha';

$arra = str_getcsv ( $data , "\n" );
foreach($arra as &$Row) {
    $Row = str_getcsv($Row, ",");
    if($Row[20] != "" && $Row[20] != "fechalect"){
        $Row[20] = strftime("%Y-%m-%d %H:%M:%S",strtotime($Row[20]));
    }
    echo implode (",", $Row)."\n";
}