add files

image_display.php

@@ -0,0 +1,50 @@
+ 
+<?php
+    if ((isset($_GET['id']) && is_numeric($_GET['id'])) === FALSE) die;
+
+    include "images.php";
+    $imageId = $_GET['id'];
+    $image = Images::GetImage($imageId);
+
+    // get the source image attributes
+    $srcImage = $image->image;
+    $srcSize = getImageSizeFromString($srcImage);
+    $srcWidth = $srcSize[0];
+    $srcHeight = $srcSize[1];
+    $srcType = $srcSize[2];
+    $srcMime = $srcSize['mime'];
+    $srcImageResource = imageCreateFromString($srcImage);
+
+    // set the header for the image
+    header("Content-type: ".$srcMime);
+
+    if ((isset($_GET['width']) && is_numeric($_GET['width'])) === FALSE) {
+        // no width requested - just return the source
+        echo $srcImage;
+        exit;
+    }
+
+    // resize/resample the image to the requested size
+    $destWidth = $_GET['width'];
+    $destHeight = $destWidth * $srcSize[1] / $srcSize[0];
+
+    $destImageResource = imageCreateTrueColor($destWidth, $destHeight);
+    imagealphablending($destImageResource, false);
+    imagesavealpha($destImageResource, true);
+    imageCopyResampled($destImageResource, $srcImageResource, 0,0,0,0, $destWidth, $destHeight, $srcWidth, $srcHeight);
+
+    // export the image
+    switch ($srcType) {
+        case IMAGETYPE_JPEG:
+            imageJPEG($destImageResource);
+            break;
+        case IMAGETYPE_PNG:
+            imagePNG($destImageResource);
+            break;
+        default:
+            imageJPEG($destImageResource);
+            break;
+    }
+
+    imageDestroy($destImageResource);
+?>