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PHP Chinese support function PHP Chinese interception string function PHP Chinese string flip

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2016-07-25 08:57:34904browse
  2. /**
  3. * Convert a string containing full-width numeric characters, letters, spaces or '%+-()' characters into corresponding half-width characters
  4. *
  5. * @access public
  6. * @param string $str String to be converted
  7. *
  8. * @return string $str processed string
  9. */
  10. function make_semiangle($str)
  11. {
  12. $arr = array('０' => '0', '１' => '1', '２' => '2', '３' => '3', '４' => '4',
  13. '５' => '5', '６' => '6', '７' => '7', '８' => '8', '９' => '9',
  14. 'Ａ' => 'A', 'Ｂ' => 'B', 'Ｃ' => 'C', 'Ｄ' => 'D', 'Ｅ' => 'E',
  15. 'Ｆ' => 'F', 'Ｇ' => 'G', 'Ｈ' => 'H', 'Ｉ' => 'I', 'Ｊ' => 'J',
  16. 'Ｋ' => 'K', 'Ｌ' => 'L', 'Ｍ' => 'M', 'Ｎ' => 'N', 'Ｏ' => 'O',
  17. 'Ｐ' => 'P', 'Ｑ' => 'Q', 'Ｒ' => 'R', 'Ｓ' => 'S', 'Ｔ' => 'T',
  18. 'Ｕ' => 'U', 'Ｖ' => 'V', 'Ｗ' => 'W', 'Ｘ' => 'X', 'Ｙ' => 'Y',
  19. 'Ｚ' => 'Z', 'ａ' => 'a', 'ｂ' => 'b', 'ｃ' => 'c', 'ｄ' => 'd',
  20. 'ｅ' => 'e', 'ｆ' => 'f', 'ｇ' => 'g', 'ｈ' => 'h', 'ｉ' => 'i',
  21. 'ｊ' => 'j', 'ｋ' => 'k', 'ｌ' => 'l', 'ｍ' => 'm', 'ｎ' => 'n',
  22. 'ｏ' => 'o', 'ｐ' => 'p', 'ｑ' => 'q', 'ｒ' => 'r', 'ｓ' => 's',
  23. 'ｔ' => 't', 'ｕ' => 'u', 'ｖ' => 'v', 'ｗ' => 'w', 'ｘ' => 'x',
  24. 'ｙ' => 'y', 'ｚ' => 'z',
  25. '（' => '(', '）' => ')', '〔' => '[', '〕' => ']', '【' => '[',
  26. '】' => ']', '〖' => '[', '〗' => ']', '“' => '[', '”' => ']',
  27. '‘' => '[', '’' => ']', '｛' => '{', '｝' => '}', '《' => '<',
  28. '》' => '>',
  29. '％' => '%', '＋' => '+', '—' => '-', '－' => '-', '～' => '-',
  30. '：' => ':', '。' => '.', '、' => ',', '，' => '.', '、' => '.',
  31. '；' => ',', '？' => '?', '！' => '!', '…' => '-', '‖' => '|',
  32. '”' => '"', '’' => '`', '‘' => '`', '｜' => '|', '〃' => '"',
  33. '　' => ' ','＄'=>'$','＠'=>'@','＃'=>'#','＾'=>'^','＆'=>'&','＊'=>'*');
  35. return strtr($str, $arr);
  36. }
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例2，php中文截取字符串

  2. /*
  3. Utf-8、gb2312都支持的汉字截取函数
  4. cut_str(字符串, 截取长度, 开始长度, 编码);
  5. 编码默认为 utf-8
  6. 开始长度默认为 0
  7. * edit: bbs.it-home.org
  8. */
  9. function cut_str($string, $sublen, $start = 0, $code = 'UTF-8') {
  10. if ($code == 'UTF-8') {
  11. $pa = "/[x01-x7f]|[xc2-xdf][x80-xbf]|xe0[xa0-xbf][x80-xbf]|[xe1-xef][x80-xbf][x80-xbf]|xf0[x90-xbf][x80-xbf][x80-xbf]|[xf1-xf7][x80-xbf][x80-xbf][x80-xbf]/";
  12. preg_match_all ( $pa, $string, $t_string );
  13. if (count ( $t_string [0] ) - $start > $sublen)
  14. return join ( '', array_slice ( $t_string [0], $start, $sublen ) ) . "...";
  15. return join ( '', array_slice ( $t_string [0], $start, $sublen ) );
  16. } else {
  17. $start = $start * 2;
  18. $sublen = $sublen * 2;
  19. $strlen = strlen ( $string );
  20. $tmpstr = '';
  21. for($i = 0; $i < $strlen; $i ++) {
  22. if ($i >= $start && $i < ($start + $sublen)) {
  23. if (ord ( substr ( $string, $i, 1 ) ) > 129) {
  24. $tmpstr .= substr ( $string, $i, 2 );
  25. } else {
  26. $tmpstr .= substr ( $string, $i, 1 );
  27. }
  28. }
  29. if (ord ( substr ( $string, $i, 1 ) ) > 129)
  30. $i ++;
  31. }
  32. if (strlen ( $tmpstr ) < $strlen)
  33. $tmpstr .= "...";
  34. return $tmpstr;
  35. }
  36. }
  37. $str = "abcd需要截取的字符串";
  38. echo cut_str ( $str, 1, 0, 'gb2312' );
  39. ?>
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例3，字符串的载取

  2. /**
  3. * 字符截取 支持UTF8/GBK
  4. * @param $string
  5. * @param $length
  6. * @param $dot
  7. */
  8. function str_cut($string, $length, $charset = 'utf-8', $dot = '...') {
  9. $strlen = strlen($string);
  10. if($strlen <= $length) return $string;
  11. $string = str_replace(array(' ',' ', '&', '"', ''', '“', '”', '—', '<', '>', '·', '…'), array('∵',' ', '&', '"', "'", '“', '”', '—', '<', '>', '·', '…'), $string);
  12. $strcut = '';
  13. if(strtolower($charset) == 'utf-8') {
  14. $length = intval($length-strlen($dot)-$length/3);
  15. $n = $tn = $noc = 0;
  16. while($n < strlen($string)) {
  17. $t = ord($string[$n]);
  18. if($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) {
  19. $tn = 1; $n++; $noc++;
  20. } elseif(194 <= $t && $t <= 223) {
  21. $tn = 2; $n += 2; $noc += 2;
  22. } elseif(224 <= $t && $t <= 239) {
  23. $tn = 3; $n += 3; $noc += 2;
  24. } elseif(240 <= $t && $t <= 247) {
  25. $tn = 4; $n += 4; $noc += 2;
  26. } elseif(248 <= $t && $t <= 251) {
  27. $tn = 5; $n += 5; $noc += 2;
  28. } elseif($t == 252 || $t == 253) {
  29. $tn = 6; $n += 6; $noc += 2;
  30. } else {
  31. $n++;
  32. }
  33. if($noc >= $length) {
  34. break;
  35. }
  36. }
  37. if($noc > $length) {
  38. $n -= $tn;
  39. }
  40. $strcut = substr($string, 0, $n);
  41. $strcut = str_replace(array('∵', '&', '"', "'", '“', '”', '—', '<', '>', '·', '…'), array(' ', '&', '"', ''', '“', '”', '—', '<', '>', '·', '…'), $strcut);
  42. } else {
  43. $dotlen = strlen($dot);
  44. $maxi = $length - $dotlen - 1;
  45. $current_str = '';
  46. $search_arr = array('&',' ', '"', "'", '“', '”', '—', '<', '>', '·', '…','∵');
  47. $replace_arr = array('&',' ', '"', ''', '“', '”', '—', '<', '>', '·', '…',' ');
  48. $search_flip = array_flip($search_arr);
  49. for ($i = 0; $i < $maxi; $i++) {
  50. $current_str = ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];
  51. if (in_array($current_str, $search_arr)) {
  52. $key = $search_flip[$current_str];
  53. $current_str = str_replace($search_arr[$key], $replace_arr[$key], $current_str);
  54. }
  55. $strcut .= $current_str;
  56. }
  57. }
  58. return $strcut.$dot;
  59. }
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例4，PHP中文字符串翻转 翻转一个字符串可以使用strrev()函数即可。 但有时需要处理是字符串是含中文的，这样用strrev就会出现乱码。 这里自定义一个函数来处理含中文的字符。

  3. /**

  4. * 中文字符串翻转
  5. * by bbs.it-home.org
  6. */
  7. function cstrrev($str)
  8. {
  9. $len = strlen($str);
  10. for($i = 0; $i < $len; $i++)
  11. {
  12. $char = $str{0};
  13. if(ord($char) > 127)
  14. {
  15. $i++;
  16. if($i < $len)
  17. {
  18. $arr[] = substr($str, 0, 2);
  19. $str = substr($str, 2);
  20. }
  21. }
  22. else
  23. {
  24. $arr[] = $char;
  25. $str = substr($str, 1);
  26. }
  27. }
  28. return join(array_reverse($arr));
  29. }

  30. #使用方法：

  31. $str = '中文.look!';
  32. echo cstrrev($str);
  33. #结果输出：!kool.文中

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附5，

  3. function str_replace_cn($needle, $str, $haystack, $charset = "utf-8"){
  4. $re['utf-8'] = "/[x01-x7f]|[xc2-xdf][x80-xbf]|[xe0-xef][x80-xbf]{2}|[xf0-xff][x80-xbf]{3}/";
  5. $re['gb2312'] = "/[x01-x7f]|[xb0-xf7][xa0-xfe]/";
  6. $re['gbk'] = "/[x01-x7f]|[x81-xfe][x40-xfe]/";
  7. $re['big5'] = "/[x01-x7f]|[x81-xfe]([x40-x7e]|xa1-xfe])/";
  9. preg_match_all($re[$charset], $haystack, $match_haystack);
  10. preg_match_all($re[$charset], $needle, $match_needle);
  12. for($i = 0; $i < count($match_needle); $i ++){
  13. if(!in_array($match_needle[0][$i], $match_haystack[0]))return $haystack;//无匹配
  14. }
  16. $match_haystack = $match_haystack[0];
  17. $match_needle = $match_needle[0];
  19. for($i = 0; $i < count($match_haystack); $i ++){
  20. if($match_haystack[$i] == "")continue;
  21. if($match_haystack[$i] == $match_needle[0]){
  22. if(count($match_needle) == 1){//如果只一个字符
  23. $match_haystack[$i] = $str;
  24. }else{
  25. $flag = true;
  26. for($j = 1; $j < count($match_needle); $j ++){
  27. if($match_haystack[$i + $j] != $match_needle[$j]){
  28. $flag = false;
  29. break;
  30. }
  31. }
  32. if($flag){//匹配
  33. $match_haystack[$i] = $str;
  34. for($j = 1; $j < count($match_needle); $j ++){
  35. $match_haystack[$i + $j] = "";
  36. }
  37. }
  38. }
  39. }
  40. }
  41. return implode("", $match_haystack);
  42. }
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