Regular matching of Chinese characters in php_PHP tutorial-PHP Tutorial-php.cn

Regular matching of Chinese characters in php_PHP tutorial

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Release： 2016-07-13 17:14:46

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In php, if you want to use regular expression to get Chinese characters in a string, we first need to know the page encoding. Regular matching of Chinese characters is slightly different depending on the page encoding: GBK/GB2312 encoding: [x80-xff>]+ or [ xa1-xff]+ and UTF-8 encoding: [x{4e00}-x{9fa5}]+/u.

Example

The code is as follows

代码如下	复制代码
echo (mb_eregi("[x80-xff].","中d文") ? "有" : "无") ."汉字"; echo (mb_eregi("^([x80-xff].)+$","中文") ? "全是汉字" : ""); 看一判断全中文字符串函数

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代码如下

复制代码

$str = "学习php是一件快乐的事。";
preg_match_all("/[x80-xff]+/", $str, $match);
//UTF-8 使用：
//preg_match_all("/[x{4e00}-x{9fa5}]+/u", $str, $match);
print_r($match);
?>

输出：

Array
(
    [0] => Array
        (
            [0] => 学习
            [1] => 是一件快乐的事。
        )

)

echo (mb_eregi("[x80-xff].","中文") ? "有" : "无") ."汉字";

echo (mb_eregi("^([x80-xff].)+$","Chinese") ? "All Chinese characters" : ""); Take a look at the function to determine all Chinese strings

代码如下	复制代码
$str = "请问php中的eregi如何匹配汉字"; if (preg_match("/^[".chr(0x80)."-".chr(0xff)."]+$/",$str)) { echo "这是一个纯中文字符串"; } else{ echo "这不是一个纯中文字串"; } preg_match_all($pat,……)与preg_replace($pat,……)……

The following uses PHP as an example for matching:

Preg_match_all("/[x80-xff]+/", $str, $match);

The code is as follows

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代码如下	复制代码
$str = "小小子"; if(preg_match("/^[xb0-xf7][xa0-xfe]+$/",$str)){ print($str."确实全是汉字"); } else { print($str."这个真tc不全是汉字"); } ?>

$str = "Learning PHP is a happy thing.";