PHP implements filtering out non-Chinese characters and only retaining Chinese characters_PHP tutorial

PHP implementation filters out non-Chinese characters and only retains Chinese characters

This article mainly introduces the PHP implementation to filter out non-Chinese characters and only retains Chinese characters. This article directly gives the implementation code , friends in need can refer to it

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$str = "a 1b 2b＜中文＞。xxyy字符"; //转换 GB2312 -> UTF-8 $str = mb_convert_encoding($str, 'UTF-8', 'GB2312');   preg_match_all('/[x{4e00}-x{9fff}] /u', $str, $matches); $str = join('', $matches[0]);   //转换 UTF-8 -> GB2312 $str = mb_convert_encoding($str, 'GB2312', 'UTF-8');   echo $str; //输出 中文字符   ?>

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<🎜> <🎜> <🎜>$str = "a 1b 2b＜Chinese＞.xxyy characters";<🎜> <🎜> <🎜> <🎜>//Convert GB2312 -> UTF-8 $str = mb_convert_encoding($str, 'UTF-8', 'GB2312'); preg_match_all('/[x{4e00}-x{9fff}] /u', $str, $matches); $str = join('', $matches[0]); //Convert UTF-8 -> GB2312 $str = mb_convert_encoding($str, 'GB2312', 'UTF-8'); echo $str; //Output Chinese characters ?>

http://www.bkjia.com/PHPjc/1011118.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1011118.htmlTechArticlePHP implementation to filter out non-Chinese characters and only retain Chinese characters. This article mainly introduces PHP implementation to filter out non-Chinese characters. Only Chinese characters are retained. This article directly gives the implementation code. Friends who need it...