PHP Decode

<?  session_start();  
ob_start();                                                                        //    Err404()      
function Err404() {                                                                // Err404()      
header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');  
include_once("err404.php"); 
exit; 
} 
/** 
1 -   catalog  file.php  \ electronics_computers.html  
2 -   catalog,     file.php,     brend.php  \  job_help.html    electronics_mobilephones.html 
3 -   catalog,     file.php   brend.php   , artikul   \  bilding_foto.html 
4 -   catalog, catalog  artikul     \ foto_cannon.html 
5 -   $catalog,  artikul   \  foto.html     180728222519.html 
6 -   $catalog     index.php     \     electronics.html    
 
  Controller : 
index -     : 
 - category 
 - subcategory 
 - section 
 - artikul 
  - produce 
- - prodcat 
- - prodsub 
-  - prodsec 
**/ 
################################################################################################################################################ 
if (!empty($_SERVER['REQUEST_URI'])) {   
$uri=trim($_SERVER['REQUEST_URI'], '/'); 
} 
$urii = preg_replace("~.html.html~",'',$uri);                                      //    ".html.html"  
if ($urii==$uri)  {}        
else {Err404();}  
################################################################################################################################################ 
$urii = preg_replace("~.html~",'',$uri);  
if ($urii==$uri)  {Err404();}                                                     //   404    html 
$segments = explode('_', $uri);       
if (!empty($segments[2]))  {Err404();}                                            //   404    URL   "_" 
###############################################    1  2  3   ################################################################################# 
if (!empty($segments[1])) {                                                       //URL  $catalog_$file.html                                   
$catalog =$segments[0];                                                           //    $catalog/brend.php           
$file = preg_replace("~.html~",'',$segments[1]); 
if (file_exists("$catalog/brend.php")) { 
include "$catalog/brend.php";                                
if (file_exists("$catalog/$file.php")) {                                          //1 -  $catalog  file.php  
if (!empty($_SESSION['admin'])) {echo "<p>1 -   catalog  file.php</p>";} 
    include 'title.php';  
	exit; 
	}                                                                      
else { 
if (!empty($name)) {                                                            // if ($file==doors) {$name="";},  title.php    
if (!empty($_SESSION['admin'])) {echo "<p>2 -   catalog,     file.php,     brend.php</p>";} 
	$file=artikul; include 'title.php'; exit;}                               // $file=artikul;  ,         
else{ 
$artikul=$file;                                                                  //   $catalog/$file.php     
include 'mysql/init.php'; 
$query = mysql_query("SELECT * FROM $table WHERE catalog='$catalog' and artikul='$artikul'"); 
echo $sql; 
$result = mysql_fetch_array($query); 
$name= trim( preg_replace( '/\s\s+/', " ", strip_tags($result[name]) ) ); 
$id = $result[id]; 
$artikul = $result[artikul]; 
$brend = $result[brend]; 
$name = $result[name]; 
$info = $result[info]; 
$format = $result[format]; 
$type = $result[type]; 
$price = $result[price]; 
$valut = $result[valut]; 
$seria = $result[seria]; 
$category = $result[category]; 
$product = $result[product]; 
$selekt = $result[selekt]; 
$menager = $result[menager]; 
$s1 = $result[s1]; 
$s2 = $result[s2]; 
$s3 = $result[s3];       
if ( (!empty($catalog)) and (!empty($artikul)) )  {                                                             //$artikul   
	$num_rows = mysql_num_rows($query);                                                                        // 3  catalog,  file.php, 
if (!empty($_SESSION['admin'])) {echo "<p>3 -   catalog,     file.php   brend.php   , artikul   \ $table /    $num_rows </p>";} 
    if ($num_rows=="1") {if (file_exists("title.php")) {include ("title.php"); exit;} }                         // 3 bilding_foto.html 
    else  {echo "<p style='color:#a00;'>    = $num_rows</p>"; Err404();}	 
	exit; 
}                                                                       
else {Err404();}  
}	 
}                                                                                
}                                                                                 
}  
#######################################################      4        #########################################################################                                                                            
if (!empty($segments[1])) {                                                       //URL  $catalog_$file.html                                   
$catalog =$segments[0];                                                            
$file = preg_replace("~.html~",'',$segments[1]); 
if (!file_exists("$catalog/brend.php")) {                                         //     $catalog/brend.php           
$artikul=$file; 
include 'mysql/init.php'; 
$query = mysql_query("SELECT * FROM $table WHERE catalog='$catalog' and artikul='$artikul'"); 
$result = mysql_fetch_array($query); 
$name= trim( preg_replace( '/\s\s+/', " ", strip_tags($result[name]) ) ); 
$id = $result[id]; 
$artikul = $result[artikul]; 
$brend = $result[brend]; 
$name = $result[name]; 
$info = $result[info]; 
$format = $result[format]; 
$type = $result[type]; 
$price = $result[price]; 
$valut = $result[valut]; 
$seria = $result[seria]; 
$category = $result[category]; 
$product = $result[product]; 
$selekt = $result[selekt]; 
$menager = $result[menager]; 
$s1 = $result[s1]; 
$s2 = $result[s2]; 
$s3 = $result[s3];                               
if ( (!empty($catalog)) and (!empty($artikul)) )  {                                                            //4 - $catalog  $artikul   
	$num_rows = mysql_num_rows($query); 
if (!empty($_SESSION['admin'])) {echo "<p>4 -   catalog, catalog  artikul   / $table /    $num_rows </p>";} 
	if ($num_rows=="1") {if (file_exists("title.php")) {include ("title.php"); exit;} } 
    else  {echo "<p style='color:#a00;'>    = $num_rows</p>"; Err404();}	 
	exit; 
} 
else {Err404();}  
} 
} 
#########################################################        5        #######################################################################                                                                            
if (empty($segments[1])) {                                                                //URL  $catalog.html                                   
#$artikul =$segments[0];                                                            
$artikul = preg_replace("~.html~",'',$segments[0]); 
if (!file_exists("$catalog/brend.php")) {                                                 //     $catalog/brend.php           
include 'mysql/init.php'; 
$query = mysql_query("SELECT * FROM $table WHERE catalog='' and artikul='$artikul'"); 
$result = mysql_fetch_array($query); 
$name= trim( preg_replace( '/\s\s+/', " ", strip_tags($result[name]) ) ); 
$id = $result[id]; 
$artikul = $result[artikul]; 
$brend = $result[brend]; 
$name = $result[name]; 
$info = $result[info]; 
$format = $result[format]; 
$type = $result[type]; 
$price = $result[price]; 
$valut = $result[valut]; 
$seria = $result[seria]; 
$category = $result[category]; 
$product = $result[product]; 
$selekt = $result[selekt]; 
$menager = $result[menager]; 
$s1 = $result[s1]; 
$s2 = $result[s2]; 
$s3 = $result[s3];                              
if (!empty($artikul))   {                                                                                          //5 -   $catalog 
	$num_rows = mysql_num_rows($query);                                                                           //5 - $catalog  $artikul   
if (!empty($_SESSION['admin'])) {echo "<p>5 - Artikul \id = $id \   catalog, artikul   \ $table /    $num_rows </p>";} 
 	if ($num_rows=="1") {if (file_exists("title.php")) {include ("title.php"); exit;} }                               //5 - foto.html 
    else  {echo "<p style='color:#a00;'>    = $num_rows</p>"; Err404();}	 
	exit; 
} 
else {Err404();}  
} 
} 
#############################################################     6          ###################################################################                                                                            
$catalog = preg_replace("~.html~",'',$segments[0]);                                  //      $catalog.html,  
if ( (file_exists("$catalog")) and ($uri== $segments[0]) )  {                         //  $catalog     index.php,   
if (file_exists("$catalog/index.php")) { 
if (!empty($_SESSION['admin'])) {echo "<p>6 -   $catalog     index.php, index.php  controller/catalog.php</p>";} 
	$file="index"; include 'title.php';                                             // ,    title.php         
	exit; 
	}                      
    }   ?>