TransWar File Browser

Path: C:\

<?php
$n = count($_POST['no']);
for ($a=0;$a<$n;$a++){$nova[$a]=$_POST['no'][$a];}
$json = file_get_contents('matriz.json');
$principal=json_decode($json, true);
$lin=count($principal);
for ($a=0;$a<$n;$a++){$principal[$a]['cor']=$nova[$a];}
$json=json_encode($principal);
$fopen=fopen('matriz.json','w');
$fwrite=fwrite($fopen,$json);
fclose($fopen);
echo "<script language='JavaScript'>location.href='index.php';</script>";
?>