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PHP implements filtering out non-Chinese characters and only retaining Chinese characters, _PHP tutorial
- WBOYOriginal
- 2016-07-13 09:51:511145browse
PHP implements filtering out non-Chinese characters and only retaining Chinese characters,
<?php
$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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