Images Miniatures

                    

                    

                    
<?php
/*------------------------------*/
/*
 Titre : Images Miniatures                                                                                                
                                                                                                                          
 Date édition     : 15 Fev 2019                                                                                          
*/
/*------------------------------*/


 function make_thumbs($dirSrc , $dirDest){
 /* parametres supplementaires : 
  * $tnH : largeur a attribuer aux miniatures. (par defaut : 100 px)
  * (la hauteur est determinee de facon a conserver le ratio) 
  * $format : format de sortie (par defaut le format de l'image originale) 
  * valeurs : "GIF", "JPG", "PNG", "WBMP" 
  */ 
  
  $tnH = 100; 
  if (func_num_args() >= 3) 
  { 
  $arg = func_get_arg(2); 
  if (is_int($arg)) 
  $tnH = $arg; 
  if (is_string($arg)) 
  { 
  if (!strcmp("GIF", strtoupper($arg))) 
   $format = 1; 
   else 
   if (!strcmp("JPG", strtoupper($arg))) 
   $format = 2; 
   else 
   if (!strcmp("PNG", strtoupper($arg))) 
   $format = 3; 
   else 
   if (!strcmp("WBMP", strtoupper($arg))) 
   $format = 4; 
  } 
  } 
  if (func_num_args() >= 4) 
  { 
  $arg = func_get_arg(3); 
  if (is_int($arg)) 
  $tnH = $arg; 
  if (is_string($arg)) 
  { 
  if (!strcmp("GIF", strtoupper($arg))) 
   $format = 1; 
   else 
   if (!strcmp("JPG", strtoupper($arg))) 
   $format = 2; 
   else 
   if (!strcmp("PNG", strtoupper($arg))) 
   $format = 3; 
   else 
   if (!strcmp("WBMP", strtoupper($arg))) 
   $format = 4; 
  } 
  } 
  
  if (!(preg_match("/\/$/i", $dirSrc))) 
  $dirSrc .= "/"; 
  
 // test des permissions sur le repertoire de destination 
  $perms = fileperms($dirDest); 
  $perms = $perms & 07; 
  if (($perms & 01) && ($perms & 02) && ($perms & 04)) 
  { 
  if (!(preg_match("/\/$/i", $dirDest))) 
  $dirDest .= "/"; 
  } 
  else 
  return "Le repertoire cible doit etre lisible, inscriptible et executable";
  $fp = opendir($dirSrc); 
  if (!$fp) 
  return "Repertoire source illisible"; 
  $pics = array(); 
  while($file = readdir($fp)) 
  { 
  if (!is_dir($file) && (preg_match("/\.(gif|jpe|jpg|jpeg|png|wbmp)$/i",  $file)
))
  { 
  array_push($pics, "$dirSrc$file"); 
   } 
  } 
  closedir($fp); 
  $taille = sizeof($pics); 
  $thumbs = array(); 
  
  for ($i=0;$i<$taille;$i++) 
  { 
  $size = getimagesize($pics[$i]); // sauvegarde des attributs de l'image 
  switch($size[2]) 
  { 
  case 1 : 
  if (imagetypes() & IMG_GIF) 
   $src = imagecreatefromgif($pics[$i]); // l'image est au format gif
  break; 
  case 2 : 
  if (imagetypes() & IMG_JPG) 
   $src = imagecreatefromjpeg($pics[$i]); // l'image est au format jpeg
  break; 
  case 3 : 
  if (imagetypes() & IMG_PNG) 
   $src = imagecreatefrompng($pics[$i]); // l'image est au format png
  break; 
  default : 
  if (preg_match("/\.wbmp$/", $pics[$i]) && (imagetypes() & IMG_WBMP))
  { 
   $src = imagecreatefromwbmp($pics[$i]); 
  $size[0] = imagesx($src); 
  $size[1] = imagesy($src); 
  if (!isset($format)) 
  $format = 4; 
  } 
  
  } 
  if ($src == '') 
  { 
  $thumbs[$pics[$i]] = "format non supporte"; 
  } 
  else 
  { 
  $destW = $size[0]*$tnH/$size[1]; 
  $destH = $tnH; 
  $dest = imagecreate($destW, $destH); // creation de l'image de  destination
  imagecopyresized($dest, $src, 0, 0, 0, 0, $destW, $destH, $size[0], $size[1]);
  
  $tn_name = $pics[$i]; 
   /* renommage du fichicer de destination (ajout de "_tn") */ 
  $tn_name = preg_replace("/\.(gif|jpe|jpg|jpeg|png|wbmp)$/i", "_tn", $tn_name);
   /* changement du chemin d'acces de $dirSrc en $dirDest */ 
   $tn_name = preg_replace("/.*\/([^\/]+)$/i", "$dirDest\\1", $tn_name); 
  if (isset($format)) 
   $type = $format; 
  else 
   $type = $size[2]; 
  switch($type) 
  { 
  case 1 : 
  if (imagetypes() & IMG_GIF) 
   { 
   imagegif($dest, $tn_name.".gif"); 
  $thumbs[$pics[$i]] = "$tn_name.gif"; 
  }  
  break; 
  case 2 : 
  if (imagetypes() & IMG_JPG) 
   { 
  imagejpeg($dest, $tn_name.".jpg"); 
  $thumbs[$pics[$i]] = "$tn_name.jpg"; 
  } 
  break; 
  case 3 : 
  if (imagetypes() & IMG_PNG) 
  { 
  imagepng($dest, $tn_name.".png"); 
  $thumbs[$pics[$i]] = "$tn_name.png"; 
  } 
  break; 
  default : 
  if (imagetypes() & IMG_WBMP) 
  { 
  imagewbmp($dest, $tn_name.".wbmp"); 
  $thumbs[$pics[$i]] = "$tn_name.wbmp"; 
  } 
  } 
   if (!($thumbs[$pics[$i]])) 
   { 
  $thumbs[$pics[$i]] = "format non supporte"; 
  } 
  } 
  } 
  return ($thumbs); 
}

?>