抓取中文的来源可以是文本，网页，只要是有中文的地方就行，每个部分都有注释，里面包含中文的抓取和中文去重两部分。
<?php $str = "ddddvvv(,中文.)dfdsfds字啊 啊符啊.";//把GB2312编码转化为 UTF-8编码//$str = mb_convert_encoding($str, 'UTF-8', 'GB2312');//正则匹配preg_match_all('/[\x{4e00}-\x{9fff}]+/u', $str, $matches);//把匹配到的数组连接为字符串$str = implode('', $matches[0]);//中文字符去重$str = str_split($str,3);$str = array_unique($str);$str = implode($str);//把UTF-8编码转化为 GB2312编码$str = mb_convert_encoding($str, 'GB2312', 'UTF-8'); echo $str; ?>
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