Revision 756
Added by thorn about 16 years ago
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One can improve CAPTCHA-type "CAPTCHA with varying fonts and backgrounds" |
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One can improve all CAPTCHA-types with varying fonts and backgrounds |
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- by adding backgrounds (PNG-images, 140x40 pixels) to backgrounds/ |
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- and by adding TrueType-fonts to fonts/ |
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How to use: |
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use |
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require_once(WB_PATH.'/include/captcha/captcha.php'); // will output a table with 3 columns: |CAPTCHA|Input|Text|. The calc_image captcha have 4 columns |CAPTCHA|=|Input|Text|. |
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and put |
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<?php call_captcha(); ?> |
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into your form. |
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1.) |
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put |
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require_once(WB_PATH.'/include/captcha/captcha.php'); |
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in your file. |
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The CAPTCHA-code is allways stored in $_SESSION['captcha'] |
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The user-input is in $_POST['captcha'] (or $_GET['captcha']). |
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call_captcha() will output code like this |
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2a.) |
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put |
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<?php call_captcha(); ?> |
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into your form. |
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This will output a table with varying columns (3 or 4) like this example: |
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<table class="captcha_table"><tr> |
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<td><img src="<?php echo WB_URL.'/include/captcha/captchas/'.CAPTCHA_TYPE.".php?t=$t"; ?>" alt="Captcha" /></td>
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<td><img src="http://www.example.org/include/captcha/captchas/ttf.php?t=64241454" alt="Captcha" /></td>
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<td><input type="text" name="captcha" maxlength="5" style="width:50px" /></td> |
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<td class="captcha_expl"><?php echo $MOD_CAPTCHA['VERIFICATION_INFO_TEXT']; ?></td>
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<td class="captcha_expl">Fill in the result</td>
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</tr></table> |
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2b.) |
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If you want to use your own layout, use additional parameters to call_captcha(): |
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call_captcha('all') will output the whole table as above.
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call_captcha('image', $style); will output the <img>-tag for the image only (or the text for an text-style captcha):
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Examples: |
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call_captcha('image', 'style="...; title="captcha"');
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<img style="...; title="captcha" src="http://www.example.org/include/captcha/captchas/captcha.php?t=46784246" /> |
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or |
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<span style="...; title="captcha">4 add 6</span> |
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call_captcha('image');
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<img src="http://www.example.org/include/captcha/captchas/captcha.php?t=46784246" /> |
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or |
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4 add 6 |
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call_captcha('input', $style); will output the input-field:
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call_captcha('input', 'style"...;"');
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<input type="text" name="captcha" style="...;" /> |
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call_captcha('input');
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<input type="text" name="captcha" style="width:50px;" maxlength="10" /> |
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call_captcha('text', $style); will output a short "what to do"-text
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call_captcha('text', 'style="...;"');
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<span style="...;">Fill in the result</span> |
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call_captcha('text');
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Fill in the result |
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The CAPTCHA-code is allways stored in $_SESSION['captcha'] for verification with user-input. |
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The user-input is in $_POST['captcha'] (or maybe $_GET['captcha']). |
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Also available in: Unified diff
call_captcha: added parameter 'style', fixed some issue with parameter 'image' and text-style captchas