Initial import

inside/imageResize.php

@@ -0,0 +1,116 @@
+<?php
+/*
+ *This simple script is written by Gunnar Lium (post@gunnarlium.com).
+ *
+ *Usage: <img src="imageResize.php?pic=source.type&amp;maxwidth=xxx>
+ *Replace source.type with the relevant imagesource and xxx with desired maxwidth.
+ *
+ *This script supports .gif, .jpg and .png formats, but further extensions should be
+ *quite easy to implement.
+ *
+ *Please feel free to modify and use this script at your own leisure!
+ *
+ *Update 18/03-05: Added support for transparent gifs/pngs.
+ ***********************************************************************************/
+
+
+// Filename and new maxwidth from GET
+$filename  = $_GET['pic'];
+if (isset($_GET['maxwidth'])){
+  $maxwidth  = $_GET['maxwidth'];
+}
+if (isset($_GET['maxheight'])){
+  $maxheight = $_GET['maxheight'];
+}
+
+//Quality setting for jpegs, if not supplied as argument, default value is used (75);
+if (isset($_GET['quality'])){
+  $quality = $_GET['quality'];
+}else {
+  $quality = 75;
+}
+
+list($width, $height, $format) = getimagesize($filename);
+
+// Define content type and load source
+switch ($format){
+case 0:
+  break;
+case 1:
+  header('Content-type: image/gif');
+  $source = imagecreatefromgif($filename);
+  break;
+case 2:
+  header('Content-type: image/jpeg');
+  $source = imagecreatefromjpeg($filename);
+  break;
+case 3:
+  header('Content-type: image/png');
+  $source = imagecreatefrompng($filename);
+  break;
+}
+
+if (isset($maxwidth) && isset($maxheight)){
+  // Get new sizes
+  if ($width < $maxwidth){
+    $newwidth = $width;
+    $newheight = $height;
+  }else {
+    $div = $maxwidth/$width;
+    $newwidth = $width * $div;
+    $newheight = $height * $div;
+  }
+  if ($newheight > $maxheight){
+    $div = $maxheight/$newheight;
+    $newwidth = $newwidth * $div;
+    $newheight = $newheight * $div;
+  }
+}else if (isset($maxwidth)){
+  // Get new sizes
+  if ($width < $maxwidth){
+    $newwidth = $width;
+    $newheight = $height;
+  }else {
+    $div = $maxwidth/$width;
+    $newwidth = $width * $div;
+    $newheight = $height * $div;
+  }
+}else if (isset($maxheight)){
+  // Get new sizes
+  if ($height < $maxheight){
+    $newwidth = $width;
+    $newheight = $height;
+  }else {
+    $div = $maxheight/$height;
+    $newwidth = $width * $div;
+    $newheight = $height * $div;
+  }
+}
+
+// Load new image
+if ($format != 2){
+  $newimage = imagecreate($newwidth, $newheight);
+  $color = ImageColorAllocate($newimage, 255, 255, 255);
+  imagefill($newimage, 0, 0, $color);
+}else {
+  $newimage = imagecreatetruecolor($newwidth, $newheight);
+}
+// Resize image
+imagecopyresized($newimage, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
+
+// Output image
+switch ($format){
+case 0:
+  break;
+case 1:
+  imagegif($newimage);
+  break;
+case 2:
+  imagejpeg($newimage, "", $quality);
+  break;
+case 3:
+  imagepng($newimage);
+  break;
+}
+
+?>