PHP实现过滤掉非汉字字符只保留中文字符
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2022-06-26 19:13:12
utf-8
$str = mb...
<?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
?>