下面来总结一些常用的汉字转换成Unicode编码PHP程序实现代码,我们只要了解到Unicode编码与gbk编码之间的内置转换原理即可了.

汉字转换成unicode方法,代码如下:

1. <?php
2. //将utf8编码的汉字转换为unicode
3. function htou($c){
4. $n = (ord($c[0]) & 0x1f) << 12;
5. $n = (ord($c[1]) & 0x3f) << 6;
6. $n = ord($c[2]) & 0x3f;
7. return $n;
8. }
9. //在代码中隐藏utf8格式的字符串
10. function my_utf8_unicode($str) {
11. $encode='';
12. for($i=0;$i<strlen($str);$i ){
13. if(ord(substr($str,$i,1))> 0xa0){
14. $encode.='&#'.htou(substr($str,$i,3)).';';
15. $i =2;
16. }else{
17. $encode.='&#'.ord($str[$i]).';';
18. }
19. }
20. return $encode;
21. }
22. echo my_utf8_unicode("哈哈ABC");
23. ?>

汉字转换成unicode方法二,代码如下:

1. function getUnicode($word)
2. {
3. // 转UTF8
4. $word0 = iconv('gbk', 'utf-8', $word);
5. $word1 = iconv('utf-8', 'gbk', $word0);
6. $word = ($word1 == $word) ? $word0 : $word;
7. // 拆分汉字
8. preg_match_all('#(?:[x00-x7F]|[xC0-xFF][x80-xBF]+)#s', $word, $array, PREG_PATTERN_ORDER);
9. $return = array();
10. // 转换
11. foreach ($array[0] as $cc)
12. {
13. $arr = str_split($cc);
14. $bin_str = '';
15. foreach ($arr as $value)
16. {
17. $bin_str .= decbin(ord($value));
18. }
19. $bin_str = preg_replace('/^.{4}(.{4}).{2}(.{6}).{2}(.{6})$/','$1$2$3', $bin_str);
20. $return[] = '&#' . bindec($bin_str) . ';';
21. }
22. return implode('', $return);
23. }

函数用法,代码如下:

1. $word = '一个汉字转换成Ｕｎｉｃｏｄｅ四字节编码的PHP函数。';
2. echo getUnicode($word);
3. /*
4. 上述将输出如下结果：
5. &#19968&#20010&#27721&#23383&#36716&#25442&#25104&#65333&#65358
6. &#65353&#65347&#65359&#65348&#65349&#22235&#23383&#33410&#32534
7. &#30721&#30340&#80&#72&#80&#20989&#25968&#12290
8. */

这一组函数可以将汉字转成unicode编码,也可以将unicode解码成汉字.

将汉字转成Unicode的函数,代码如下:

1. function uni_encode ($word)
2. {
3. $word0 = iconv('gbk', 'utf-8', $word);
4. $word1 = iconv('utf-8', 'gbk', $word0);
5. $word = ($word1 == $word) ? $word0 : $word;
6. $word = json_encode($word);
7. $word = preg_replace_callback('/\\u(w{4})/', create_function('$hex', 'return '&#'.hexdec($hex[1]).';';'), substr($word, 1, strlen($word)-2));
8. return $word;
9. }

对Unicode编码进行解码的函数,代码如下:

1. function uni_decode ($uncode)
2. {
3. $word = json_decode(preg_replace_callback('/&#(d{5});/', create_function('$dec', 'return '\u'.dechex($dec[1]);'), '"'.$uncode.'"'));
4. return $word;
5. }