- decbin: documentation ( source)
- str_replace: documentation ( source)
- explode: documentation ( source)
<?php
$content = "-1048576
4095
0
-32";
$content = str_replace(array("\r\n", "\r",), "\n", $content);
$array = explode("\n", $content);
foreach ($array as $int) {
echo decbin($int), "\n";
}