Created
October 1, 2013 06:36
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PHPでCAPTCHA実装
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| <?php session_start() ?> | |
| <html> | |
| <head> | |
| <title>secureimage test</title> | |
| </head> | |
| <body> | |
| <div> | |
| <!-- 入力フォーム --> | |
| <form action="" method="post"> | |
| <!-- secureimage_show.phpを呼ぶとイメージが出てくる --> | |
| <img id="captcha" src="./securimage/securimage_show.php" alt="CAPTCHA Image" /><br /> | |
| <!-- コードを入力するフォーム --> | |
| <input type="text" name="captcha_code" size="10" maxlength="6" /> | |
| <!-- イメージを変えるためのボタンを追加 --> | |
| <a href="#" onclick="document.getElementById('captcha').src = './securimage/securimage_show.php?' + Math.random(); return false"> | |
| <img src="./securimage/images/refresh.png" alt="Reload Image" height="32" width="32" onclick="this.blur()" align="bottom" border="0"/> | |
| </a> | |
| <!-- submit ボタン --> | |
| <input type="submit" value="check"> | |
| <p> | |
| <?php | |
| // 入力があった場合のみ処理する | |
| if(!empty($_POST['captcha_code'])){ | |
| // secureimage.phpをインクルードする | |
| include_once("./securimage/securimage.php"); | |
| // Securimageのオブジェクトを作成する | |
| $securimage = new Securimage(); | |
| // Securimageオブジェクトの持つcheckメソッドで入力が正しいかを | |
| // チェックする | |
| if ($securimage->check($_POST['captcha_code']) == false) { | |
| echo "認証失敗！"; | |
| exit; | |
| } else { | |
| header('Location: http://www.google.co.jp') ; | |
| } | |
| } | |
| ?> | |
| </p> | |
| </form> | |
| </body> | |
| </html> |
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