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PHP determines Chinese and English characters (one more)

WBOY
Release： 2016-07-25 09:11:02
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I seem to remember that I posted one before, written by myself. Today’s one is online and comes from: http://www.cnblogs.com/zcy_soft/archive/2010/12/13/1904791.html
  1. /* There is actually a lot of knowledge involved in judging Chinese. The underlying internal encoding involves various differences in utf-8, gbk, and gb13800. I once studied the problem of how to distinguish what character a character is. There are too many related details.
  3. Today I made a PHP code to determine Chinese. I hope it can be helpful to friends who are studying Chinese judgment. */
  7. New Document
  8. < ;META http-equiv="Content-Type" content="text/html; charset=utf-8">
  11. $str = "China";
  12. echo $str;
  13. echo "
    ";
  14. //if (preg_match("/^[".chr(0xa1)."-".chr(0xff)."]+$/", $str) ) { //Can only be used under GB2312
  15. if (preg_match("/^[x7f-xff]+$/", $str)) { //Compatible with gb2312, utf-8
  16. echo "Correct input";
  17. } else {
  18. echo "Wrong input";
  19. }
  20. ?>
  23. /*
  24. Encoding table
  25. Double-byte character encoding range
  26. 1. GBK (GB2312/GB18030)
  27. x00-xff GBK double-byte encoding range
  28. x20-x7f ASCII
  29. xa1-xff Chinese gb2312
  30. x80-xff Chinese gbk
  31. 2. UTF-8 (Unicode)
  32. u4e00-u9fa5 (Chinese)
  33. x3130-x318F (Korean
  34. xAC00-xD7A3 (Korean)
  35. u0800-u4e00 (Japanese)*/
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php 判断中英文字符(再来一个)
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