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Example of php custom function to intercept the length of Chinese characters

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Release: 2016-07-25 08:53:21
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  1. function msubstr($str,$start,$len) {
  2. $strlen=$start+$len;
  3. for($i=0;$i<$strlen;$i++) {
  4. if(ord( substr($str,$i,1))>0xa0) {
  5. $tmpstr.=substr($str,$i,2);
  6. $i++;
  7. } else
  8. $tmpstr.=substr($str,$ i,1);
  9. }
  10. return $tmpstr;
  11. }
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Call:

  1. $str="This character is so long,^_^";

  2. $Short_Str=showShort($str,4);//Intercept the first 4 Chinese characters , the result is: this character...
  3. Echo "$Short_Str";
  4. Function csubstr($str,$start,$len)
  5. {
  6. $strlen=strlen($str);
  7. $clen=0;
  8. for( $i=0;$i<$strlen;$i++,$clen++)
  9. {
  10. if ($clen>=$start+$len)
  11. break;
  12. if(ord(substr($str,$i,1)) >0xa0)
  13. {
  14. if ($clen>=$start)
  15. $tmpstr.=substr($str,$i,2);
  16. $i++;
  17. } bbs.it-home.org
  18. else
  19. {
  20. if ($clen>=$start)
  21. $tmpstr.=substr($str,$i,1);
  22. }
  23. }

  24. return $tmpstr;

  25. }
  26. Function showShort($ str,$len)
  27. {
  28. $tempstr = csubstr($str,0,$len);
  29. if ($str<>$tempstr)
  30. $tempstr .= "..."; //What to end with , just modify it here.

  31. return $tempstr;

  32. }

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Here we share a more concise method of intercepting the length of Chinese characters:

  1. $len = 19;
  2. $text = "How to display only the first few words of a long news title and replace it with...?";
  3. echo strlen ($text)<=$len ? $text : (substr($text,0,$len).chr(0)."....");
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