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PHP生成随机中文字符串

May 24, 2016 am 09:12 AM

&lt;?php
function unicode_decode($name) {
     
    // 转换编码，将Unicode编码转换成可以浏览的utf-8编码
    $pattern = &#39;/([\w]+)|(\\\u([\w]{4}))/i&#39;;
    preg_match_all($pattern, $name, $matches);
    if (!empty($matches)) {
        $name = &#39;&#39;;
        for ($j = 0; $j &lt; count($matches[0]); $j++) {
            $str = $matches[0][$j];
            if (strpos($str, &#39;\\u&#39;) === 0) {
                $code = base_convert(substr($str, 2, 2), 16, 10);
                $code2 = base_convert(substr($str, 4), 16, 10);
                $c = chr($code) . chr($code2);
                $c = iconv(&#39;UCS-2&#39;, &#39;UTF-8&#39;, $c);
                $name.= $c;
            } else {
                $name.= $str;
            }
        }
    }
    return $name;
}
if ($_SERVER[&#39;REQUEST_METHOD&#39;] == &#39;POST&#39;) {
} else {
    $str = &quot;&quot;;
    for ($i = 0; $i &lt; 100; $i++) {
        $str.= &quot;\\u&quot; . dechex(rand(19968, 40895));
    }
    $content.= unicode_decode($str);
}
?&gt;
&lt;!DOCTYPE&gt;
&lt;html&gt;
    &lt;head&gt;
        &lt;title&gt;blog&lt;/title&gt;
    &lt;/head&gt;
    &lt;body&gt;
        &lt;span&gt;&lt;?php
echo $_COOKIE[&quot;uid&quot;] ?&gt;&lt;/span&gt;
        &lt;form action=&quot;&lt;?php
htmlspecialchars($_SERVER[&#39;PHP_SELF&#39;]) ?&gt;&quot; method=&quot;post&quot; accept-charset=&quot;utf-8&quot;&gt;
            &lt;input type=&quot;text&quot; name=&quot;title&quot;&gt;
            &lt;br&gt;
            &lt;textarea name=&quot;content&quot; id=&quot;&quot; cols=&quot;30&quot; rows=&quot;10&quot;&gt;&lt;?php
echo $content; ?&gt;&lt;/textarea&gt;
            &lt;br&gt;
            &lt;input type=&quot;submit&quot; name=&#39;submit&#39;&gt;
        &lt;/form&gt;
    &lt;/body&gt;
&lt;/html&gt;

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