Typecho怎么实现评论算术验证
Typecho实现评论算术验证的方法:首先打开【comments.php】文件;然后在适当位置插入代码【】即可。
Typecho怎么实现评论算术验证?
Typecho无插件实现评论算术验证
Typecho的垃圾评论还是比较多的,除了插件外,还可以通过PHP函数实现简单的算术验证码。
第一步function.php如下函数
function themeInit($comment){ $comment = spam_protection_pre($comment, $post, $result); } function spam_protection_math(){ $num1=rand(1,49); $num2=rand(1,49); echo "<label for=\"math\">请输入<code>$num1</code>+<code>$num2</code>的计算结果:</label>\n"; echo "<input type=\"text\" name=\"sum\" class=\"text\" value=\"\" size=\"25\" tabindex=\"4\" style=\"width:218px\" placeholder=\"计算结果:\">\n"; echo "<input type=\"hidden\" name=\"num1\" value=\"$num1\">\n"; echo "<input type=\"hidden\" name=\"num2\" value=\"$num2\">"; } function spam_protection_pre($comment, $post, $result){ $sum=$_POST['sum']; switch($sum){ case $_POST['num1']+$_POST['num2']: break; case null: throw new Typecho_Widget_Exception(_t('对不起: 请输入验证码。<a href="javascript:history.back(-1)">返回上一页</a>','评论失败')); break; default: throw new Typecho_Widget_Exception(_t('对不起: 验证码错误,请<a href="javascript:history.back(-1)">返回</a>重试。','评论失败')); } return $comment; }
第二步comments.php添加函数
打开主题comments.php文件,在适当位置插入如下代码:
<?php spam_protection_math();?>
如果觉得100以内太难了,请修复function.php中添加的代码中rand后面的数字范围。
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