MASS MD5 Generator

<?php
#################################################
#MASS MD5 Generator- H4T3D
#Changing Name wont make you L33T
###################################################

ob_start();
@set_time_limit(0);
error_reporting(0);
echo "
<head>
<title>H4T3D Dork Search Engine</title>
</head>
<style>
html, body{
      background:#000000;
      color:#00FF00;
      font-family:monospace;
      height: 100%;
      text-decoration:  none;
}

textarea {
      background:#000000;
      resize:none;
      color: #00FF00 ;
      border:1px solid red ;
      border: 4px solid red ;
}
input {
       color: ##33CCFF;
       border:1px dotted #33CCFF;
}

a{
color:red;
}
</style>";
?>
<center>
<h2>MASS MD5 Generator</h2>
<form action="" method="POST">
<textarea name="md5s" rows='25' cols='20'>admin123</textarea>
<br>
<input type="submit" name="submit">
</form>

<?php

if(isset($_POST['submit'])){

$str = $_POST['md5s'];

$arr = explode("\n", $str);

foreach ($arr as $key) {

$name  = md5($key);

echo $key." --- > ".$name."</br>";

$myfile = fopen("md5s.txt", "a") or die("Unable to open file!");
        fwrite($myfile, $key." --- > ".$name."\n");
        fclose($myfile);
        flush();@ob_flush();
}
}
?>
</center>