PHP: Universal function for converting Chinese characters to unicode_PHP Tutorial

A universal function that converts a Chinese character into Unicode. It does not rely on any library or other custom functions, but there are conditions: this file and the input parameters of the function should be encoded in utf-8, otherwise a function must be added Convert.

/**
* 把一个汉字转为unicode的通用函数，不依赖任何库，和别的自定义函数，但有条件
* 条件：本文件以及函数的输入参数应该用utf－8编码，不然要加函数转换
* 其实亦可轻易编写反向转换的函数，甚至不局限于汉字，奇怪为什么php没有现成函数
* @author xieye
*
* @param {string} $word 必须是一个汉字，或代表汉字的一个数组(用str_split切割过)
* @return {string} 一个十进制unicode码，如4f60，代表汉字 “你”
*/
function getUnicodeFromOneUTF8($word) {
//获取其字符的内部数组表示，所以本文件应用utf-8编码！
if (is_array( $word))
$arr = $word;
else
$arr = str_split($word);
//此时，$arr应类似array(228, 189, 160)
//定义一个空字符串存储
$bin_str = '';
//转成数字再转成二进制字符串，最后联合起来。
foreach ($arr as $value)
$bin_str .= decbin(ord($value));
//此时，$bin_str应类似111001001011110110100000,如果是汉字"你"
//正则截取
$bin_str = preg_replace('/^.{4}(.{4}).{2}(.{6}).{2}(.{6})$/','', $bin_str);
// 此时， $bin_str应类似0100111101100000,如果是汉字"你"
return bindec($bin_str); //返回类似20320， 汉字"你"
//return dechex(bindec($bin_str)); //如想返回十六进制4f60，用这句
}
?>

http://www.bkjia.com/PHPjc/371491.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/371491.htmlTechArticleA universal function that converts a Chinese character into unicode. It does not rely on any libraries or other custom functions, but there are Conditions: This file and the input parameters of the function should be encoded in utf-8, otherwise you need to add...