CLASS GALERIE PHOTO

<?php 

	   class MyException extends Exception { 
		    public function __construct($msg=NULL, $code=0) 
		    { 
		        parent::__construct($msg, $code); 
		    }  
		} 
  
  
	class Gallery {
		private $rw;
		private $rh;
		private $rtop;
		private $w;
		private $h;
		private $pic;
		private $nbpage; 
		
		public $nombre_pic;
		public $page;
		public $page_back;
		public $page_next;
		public $affiche_pic;
		public $realpath;
		public $webpath;
		public $nombre_ppage;
		public $name_gallery;
		public $type;

		
		   public function __construct() {
			}
		
			public function data($rep,$type,$w,$h,$nbpp) { 
			if(is_dir($this->realpath.$rep)) {
				$nbfiles=0;
				$Dir=new RecursiveDirectoryIterator($this->realpath.$this->name_gallery);
				foreach (new RecursiveIteratorIterator($Dir) as $filename=>$cur) {
					if($cur->getFilename()!="index.html") {
						$nbfiles++;
						$this->pic[]=$cur->getFilename();
					}
				}
				sort($this->pic);
				$this->nombre_pic = count($this->pic);
				$this->name_gallery = $rep; //repertoir des images
				$this->type = $type; //type d'affichage
				$this->w = $w; // largeur maxi de l'image
				$this->h = $h; // hauteur maxi de l'image
				$this->nombre_ppage = $nbpp;	// nombre par page
				if($this->w==0) { $this->w=300; }
				elseif($this->w>1000) { $this->w=1000; }   // test des dimention demander
				if($this->h==0) { $this->h=300; }
				elseif($this->h>1000) { $this->h=1000; }	
			} 
			else
			 {
		 		throw new MyException('Erreur de repertoire'); 
		 	 }
		}			
		  	
		// redimention d'image
		public function RedimImage($img) {
		if(GetImageSize("".$this->realpath."".$this->name_gallery."/".$img."")) { 
		   	$dst_w = $this->w;
		   	$dst_h = $this->h;
		   	$size = GetImageSize("".$this->realpath."".$this->name_gallery."/".$img.""); // taille reel de l'image 
		   	$src_w = $size[0]; 
		   	$src_h = $size[1];
		  		$test_h = round(($dst_w / $src_w) * $src_h);
		  		$test_w = round(($dst_h / $src_h) * $src_w);
		  		
			if(!$dst_h) { $dst_h = $test_h; }
		  		elseif(!$dst_w) { $dst_w = $test_w; }
		  		elseif($test_h>$dst_h) { $dst_w = $test_w; }
		  		else { $dst_h = $test_h; }
		  
		 	if($dst_h > 1 && $dst_h < $this->h){	// centre l'image
				$top = ceil(($this->h - $dst_h) / 2);
			} else { $top = 0; }  
			
			$this->rtop = $top;
			$this->rw = $dst_w;
			$this->rh = $dst_h;
		 }
		 else
		 {
		 	throw new MyException('Erreur de redimention'); 
		 }
		}
		
		
		public function ViewGallery($page=0) {
			$this->page = $page; // recup de la page en cour
			$this->nbpage = round($this->nombre_pic / $this->nombre_ppage);	// nombre de page
			
			if($this->page > $this->nbpage-1) { $this->page=0; } // si page en cour plus grand que le nombre de page on retourne au debut
			
			if($this->page!=0) { $this->page_back = $this->page-1; } else { $this->page_back = 0; }	// page retour
			if($this->page+1 < $this->nbpage) { $this->page_next = $this->page+1; } else { $this->page_next = 0; }	// page suivant
			
			$varpic_debut = $this->page*$this->nombre_ppage;
			$varpic_fin = ($this->page+1)*$this->nombre_ppage; 
			
							foreach ($this->pic as $key => $value) {
						  if($key>=$varpic_debut && $key<$varpic_fin) { 
						  $this->RedimImage($value);
						  $args = array($value,
						  				$this->rw,
										$this->rh,
										$this->rtop);
						  $this->affiche_pic[] = $args;
					  } 
				  }
		} 
}
?>


<?php
// contenue de la page 
try{ 
$gallery = new Gallery();
$gallery->realpath = "/home/website/public_html/files/images/";
$gallery->webpath = "../files/images/";
$gallery->data('MA_DIR_equipe2','1','300','300','10'); 
$gallery->ViewGallery($_GET['page']);
}
catch(MyException $e)
{
echo 'Oops un bug : ' .$e->getMessage() . ' à la ligne : ' . $e ->getLine();
}

?> 

<table>	
	<td><a href="?op=test&page=<?= $gallery->page_back ?>"> back </a></td>
	<td><?php for($i=0;$i<count($gallery->affiche_pic);$i++) { echo '<img src="'.$gallery->webpath.$gallery->name_gallery.'/'.$gallery->affiche_pic[$i][0].'" width="'.$gallery->affiche_pic[$i][1].'" height="'.$gallery->affiche_pic[$i][2].'" style="margin-bottom:'.$gallery->affiche_pic[$i][3].'px"/>'; }  ?></td>
	<td><a href="?op=test&page=<?= $gallery->page_next ?>"> next </a></td>
	</tr>
</table>