Explode target

<?php
$x = file_get_contents("target.txt");
$x = explode("\r\n", $x);
$ix = 1;
foreach ($x as $key => $value) {
        echo $ix."/".count($x)."\r\n";
        $myfile = fopen("asu.txt", "a+") or die("Unable to open file!");
        fwrite($myfile, $value.",");
        fclose($myfile);
        $ix++;
}
?>