Split an ugly multiple vhost file to multiple files

splitvhosts.php

<?php
if (!isset($argv[1]) || !is_file($argv[1])) {
    die("Please specify an input file, preferably one that exists. e.g. php split.php vhosts.conf exportdir(optional) ");
}

if (isset($argv[2]) && is_dir($argv[2])) {
    $dir = realpath($argv[2]).DIRECTORY_SEPARATOR;
} else {
    echo "No Export dir specified, or non existent one, using default".PHP_EOL;
    $dir = getcwd().DIRECTORY_SEPARATOR."vhosts".DIRECTORY_SEPARATOR;
    if (!is_dir($dir)) {
        mkdir($dir);
    }
}

$handle = fopen($argv[1], "r");

$vhstart  = "<VirtualHost";
$vhend    = "</VirtualHost";
$sname    = "ServerName";
$vhost    = null;
$filename = null;

while (( $line = \fgets($handle) ) !== false) {
    $line = trim($line);
    if ($line != "") {
        $vhost .= $line.PHP_EOL;
        if (stristr($line, $sname)) {
            $servername = explode(" ", $line);
            $filename   = $servername[1].".conf";
        } elseif (stristr($line, $vhend)) {
            file_put_contents($dir.$filename, $vhost);
            $vhost = null;
        }
    }
}
fclose($handle);