preload logo pictures

images/logo.php

@@ -1,6 +1,9 @@
 <?php
 
-$alea=rand(0,100);
+// valeur par défaut
+$rank = -1;
+// Surcharge par les arguments
+extract($_REQUEST, EXTR_IF_EXISTS);
 
 $logo='topisto_vert_tr.png';
 
@@ -25,24 +28,26 @@ imagesavealpha($img,true);
 // copy the thumbnail into the output image.
 // imagecopyresampled($img,$block_image, 0, 0, 0, 0, $width, $height, $width, $height );
 
-if ($alea < 1000)
+$files = glob('logo/tr/topisto_*.png');
+usort($files, function($a, $b) {
+  return filemtime($a) > filemtime($b);
+});
+
+if ($rank < 0)
 {
-  $files = glob('logo/tr/topisto_*.png');
-  usort($files, function($a, $b) {
-    return filemtime($a) > filemtime($b);
-  });
-
   shuffle($files);
- 
-  $superpose = @imagecreatefrompng($files[0]);
-
-  //imagecopymerge($img, $superpose, 0, 0, 0, 0, $width, $height, 50);
-
-  imagecopyresampled($img,$superpose, 0, 0, 0, 0, $width, $height, imagesx($superpose), imagesy($superpose));
-
-  imagedestroy($superpose);
+  $rank = 0;
 }
 
+// Borner l'index aux valeurs du tableau
+$rank = $rank % count($files);
+ 
+$superpose = @imagecreatefrompng($files[$rank]);
+
+imagecopyresampled($img,$superpose, 0, 0, 0, 0, $width, $height, imagesx($superpose), imagesy($superpose));
+
+imagedestroy($superpose);
+
 imagecopymerge($img, $block_image, 0, 0, 0, 0, $width, $height, 45);
 
 // ---