Znote AAC rev 168 from subversion.

2025-10-13 18:04:54 +02:00 · 2013-08-28 23:46:32 +02:00
parent ba07284044
commit 21dea78379
160 changed files with 24752 additions and 0 deletions
--- a/captcha/examples/static_captcha.php
+++ b/captcha/examples/static_captcha.php
@@ -0,0 +1,98 @@
+<?php
+
+/**
+ * Static Captcha Example Script
+ * 2012-04-18
+ * @version 3.2RC2 (April 2012)
+ *
+ * The static captcha exposes an easy to use interface that applications can
+ * use to generate captcha challenges and validate them by a unique ID.  A
+ * captcha image can be associated with an ID and no PHP sessions are required.
+ * The captcha ID can be stored in a SQLite database by Securimage.
+ *
+ * Tip: To give the user a refresh captcha button, use Ajax to request a new ID,
+ * update the hidden form input with the new captcha ID, and update the image source
+ * to securimage_show.php providing the captcha ID.
+ */
+
+// set debugging
+error_reporting(E_ALL);
+ini_set('display_errors', 1);
+
+// defines Securimage class
+require_once '../securimage.php';
+
+// get the captcha ID from the url (if supplied)
+$captchaId = (isset($_GET['id'])) ? $_GET['id'] : '';
+
+// if the validate option is set
+if (isset($_GET['validate'])) {
+    // get the user input of the captcha code
+    $input = (isset($_GET['input'])) ? $_GET['input'] : '';
+
+    // call Securimage::checkCaptchaId to validate input
+    // returns true if the code and id are a valid pair, false if not
+    if (Securimage::checkByCaptchaId($captchaId, $input) == true) {
+        echo "<h2>Success</h2>"
+            ."<span style='color: #33cc00'>The captcha code entered was correct!</span>"
+            ."<br /><br />";
+    } else {
+        echo "<h2>Incorrect Code</h2>"
+            ."<span style='color: #f00'>Incorrect captcha code, try again.</span>"
+            ."<br /><br />";
+    }
+
+} else if (isset($_GET['display'])) {
+    // display the captcha with the supplied ID from the URL
+
+    // construct options specifying the existing captcha ID
+    // also tell securimage not to start a session
+    $options = array('captchaId'  => $captchaId,
+                     'no_session' => true);
+    $captcha = new Securimage($options);
+
+    // show the image, this sends proper HTTP headers
+    $captcha->show();
+    exit;
+}
+
+// generate a new captcha ID and challenge
+$captchaId = Securimage::getCaptchaId();
+
+// output the captcha ID, and a form to validate it
+// the form submits to itself and is validated above
+echo <<<EOD
+    <!DOCTYPE html>
+    <html>
+    <head>
+    <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
+    <title>Static Captcha Example</title>
+    </head>
+    <body>
+    <h2>Static Captcha Example</h2>
+
+    <div>
+      Synopsis:
+      <ul>
+        <li>Request new captchaId using <em>Securimage::getCaptchaId()</em></li>
+        <li>Display form with hidden field containing captchaId</li>
+        <li>Display captcha image passing the captchaId to the image</li>
+        <li>Validate captcha input against captchaId using <em>Securimage::checkByCaptchaId()</em></li>
+      </ul>
+    </div>
+    <p>&nbsp;</p>
+    <div>
+      Captcha ID: $captchaId<br /><br />
+      <img src="{$_SERVER['PHP_SELF']}?display&amp;id=$captchaId" alt="Captcha Image" /><br />
+
+      <form method="get" action="{$_SERVER['PHP_SELF']}">
+        <input type="hidden" name="validate" value="1" />
+        <input type="hidden" name="id" value="$captchaId" />
+        Enter Code:
+        <input type="text" name="input" value="" />
+        <input type="submit" name="submit" value="Check Captcha" />
+      </form>
+    </div>
+    </body>
+    </html>
+EOD;