v0.0.4

irpg-web/captchaimage.php

@@ -0,0 +1,50 @@
+<?php
+  session_start();
+
+  // Create a blank image
+  $width = 52;
+  $height = 16;
+  $image = imagecreate($width, $height);
+  $backgroundColor = imagecolorallocate($image, 212, 255, 226);
+  imagefilledrectangle($image, 0, 0, $width, $height, $backgroundColor);
+
+  // Add some text
+  $captchaString = "";
+  $allowedChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+  $charColor = imagecolorallocate($image, 64, 64, 64);
+  $numChars = 5;
+  for ($i=0; $i<$numChars; $i++)
+  {
+    $char = $allowedChars[rand(0, strlen($allowedChars)-1)];
+    imagestring($image, 5, 2+($i*10), 0, $char, $charColor);
+    $captchaString .= $char;
+  }
+
+  // Save the text to a session variable.
+  $_SESSION['captchaString'] = $captchaString;
+
+  // Add some lines
+  $lineColor = imagecolorallocate($image, 234, 132, 13);
+  $numLines = rand(2,2);
+  for($i=0; $i<$numLines; $i++)
+  {
+    imageline($image, 0, rand()%16, 52, rand()%16, $lineColor);
+  }
+
+  // Add some pixels
+  $pixelColor = imagecolorallocate($image, 11, 213, 142);
+  $numPixels = rand(38,40);
+  for($i=0; $i<$numPixels; $i++)
+  {
+    imagesetpixel($image, rand()%52, rand()%16, $pixelColor);
+  }
+
+  // Set the content type header - in this case image/jpeg
+  header('Content-type: image/jpeg');
+
+  // Output the image
+  imagejpeg($image);
+
+  // Free up memory
+  imagedestroy($image);
+?>