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PHP常用函数之获取汉字首字母功能示例
来源:jb51  时间:2019/10/21 12:58:23  对本文有异议

本文实例讲述了PHP常用函数之获取汉字首字母功能。分享给大家供大家参考,具体如下:

  1. //获取汉字的首字母
  2. function getFirstCharters($str)
  3. {
  4. if (empty($str)) {
  5. return '';
  6. }
  7. //取出参数字符串中的首个字符
  8. $temp_str = substr($str,0,1);
  9. if(ord($temp_str) > 127){
  10. $str = substr($str,0,3);
  11. }else{
  12. $str = $temp_str;
  13. $fchar = ord($str{0});
  14. if ($fchar >= ord('A') && $fchar <= ord('z')){
  15. return strtoupper($temp_str);
  16. }else{
  17. return null;
  18. }
  19. }
  20. $s1 = iconv('UTF-8', 'gb2312//IGNORE', $str);
  21. if(empty($s1)){
  22. return null;
  23. }
  24. $s2 = iconv('gb2312', 'UTF-8', $s1);
  25. if(empty($s2)){
  26. return null;
  27. }
  28. $s = $s2 == $str ? $s1 : $str;
  29. $asc = ord($s{0}) * 256 + ord($s{1}) - 65536;
  30. if ($asc >= -20319 && $asc <= -20284)
  31. return 'A';
  32. if ($asc >= -20283 && $asc <= -19776)
  33. return 'B';
  34. if ($asc >= -19775 && $asc <= -19219)
  35. return 'C';
  36. if ($asc >= -19218 && $asc <= -18711)
  37. return 'D';
  38. if ($asc >= -18710 && $asc <= -18527)
  39. return 'E';
  40. if ($asc >= -18526 && $asc <= -18240)
  41. return 'F';
  42. if ($asc >= -18239 && $asc <= -17923)
  43. return 'G';
  44. if ($asc >= -17922 && $asc <= -17418)
  45. return 'H';
  46. if ($asc >= -17417 && $asc <= -16475)
  47. return 'J';
  48. if ($asc >= -16474 && $asc <= -16213)
  49. return 'K';
  50. if ($asc >= -16212 && $asc <= -15641)
  51. return 'L';
  52. if ($asc >= -15640 && $asc <= -15166)
  53. return 'M';
  54. if ($asc >= -15165 && $asc <= -14923)
  55. return 'N';
  56. if ($asc >= -14922 && $asc <= -14915)
  57. return 'O';
  58. if ($asc >= -14914 && $asc <= -14631)
  59. return 'P';
  60. if ($asc >= -14630 && $asc <= -14150)
  61. return 'Q';
  62. if ($asc >= -14149 && $asc <= -14091)
  63. return 'R';
  64. if ($asc >= -14090 && $asc <= -13319)
  65. return 'S';
  66. if ($asc >= -13318 && $asc <= -12839)
  67. return 'T';
  68. if ($asc >= -12838 && $asc <= -12557)
  69. return 'W';
  70. if ($asc >= -12556 && $asc <= -11848)
  71. return 'X';
  72. if ($asc >= -11847 && $asc <= -11056)
  73. return 'Y';
  74. if ($asc >= -11055 && $asc <= -10247)
  75. return 'Z';
  76. return rare_words($asc);
  77. }
  78. //百家姓中的生僻字
  79. function rare_words($asc=''){
  80. $rare_arr = array(
  81. -3652=>array('word'=>"窦",'first_char'=>'D'),
  82. -8503=>array('word'=>"奚",'first_char'=>'X'),
  83. -9286=>array('word'=>"酆",'first_char'=>'F'),
  84. -7761=>array('word'=>"岑",'first_char'=>'C'),
  85. -5128=>array('word'=>"滕",'first_char'=>'T'),
  86. -9479=>array('word'=>"邬",'first_char'=>'W'),
  87. -5456=>array('word'=>"臧",'first_char'=>'Z'),
  88. -7223=>array('word'=>"闵",'first_char'=>'M'),
  89. -2877=>array('word'=>"裘",'first_char'=>'Q'),
  90. -6191=>array('word'=>"缪",'first_char'=>'M'),
  91. -5414=>array('word'=>"贲",'first_char'=>'B'),
  92. -4102=>array('word'=>"嵇",'first_char'=>'J'),
  93. -8969=>array('word'=>"荀",'first_char'=>'X'),
  94. -4938=>array('word'=>"於",'first_char'=>'Y'),
  95. -9017=>array('word'=>"芮",'first_char'=>'R'),
  96. -2848=>array('word'=>"羿",'first_char'=>'Y'),
  97. -9477=>array('word'=>"邴",'first_char'=>'B'),
  98. -9485=>array('word'=>"隗",'first_char'=>'K'),
  99. -6731=>array('word'=>"宓",'first_char'=>'M'),
  100. -9299=>array('word'=>"郗",'first_char'=>'X'),
  101. -5905=>array('word'=>"栾",'first_char'=>'L'),
  102. -4393=>array('word'=>"钭",'first_char'=>'T'),
  103. -9300=>array('word'=>"郜",'first_char'=>'G'),
  104. -8706=>array('word'=>"蔺",'first_char'=>'L'),
  105. -3613=>array('word'=>"胥",'first_char'=>'X'),
  106. -8777=>array('word'=>"莘",'first_char'=>'S'),
  107. -6708=>array('word'=>"逄",'first_char'=>'P'),
  108. -9302=>array('word'=>"郦",'first_char'=>'L'),
  109. -5965=>array('word'=>"璩",'first_char'=>'Q'),
  110. -6745=>array('word'=>"濮",'first_char'=>'P'),
  111. -4888=>array('word'=>"扈",'first_char'=>'H'),
  112. -9309=>array('word'=>"郏",'first_char'=>'J'),
  113. -5428=>array('word'=>"晏",'first_char'=>'Y'),
  114. -2849=>array('word'=>"暨",'first_char'=>'J'),
  115. -7206=>array('word'=>"阙",'first_char'=>'Q'),
  116. -4945=>array('word'=>"殳",'first_char'=>'S'),
  117. -9753=>array('word'=>"夔",'first_char'=>'K'),
  118. -10041=>array('word'=>"厍",'first_char'=>'S'),
  119. -5429=>array('word'=>"晁",'first_char'=>'C'),
  120. -2396=>array('word'=>"訾",'first_char'=>'Z'),
  121. -7205=>array('word'=>"阚",'first_char'=>'K'),
  122. -10049=>array('word'=>"乜",'first_char'=>'N'),
  123. -10015=>array('word'=>"蒯",'first_char'=>'K'),
  124. -3133=>array('word'=>"竺",'first_char'=>'Z'),
  125. -6698=>array('word'=>"逯",'first_char'=>'L'),
  126. -9799=>array('word'=>"俟",'first_char'=>'Q'),
  127. -6749=>array('word'=>"澹",'first_char'=>'T'),
  128. -7220=>array('word'=>"闾",'first_char'=>'L'),
  129. -10047=>array('word'=>"亓",'first_char'=>'Q'),
  130. -10005=>array('word'=>"仉",'first_char'=>'Z'),
  131. -3417=>array('word'=>"颛",'first_char'=>'Z'),
  132. -6431=>array('word'=>"驷",'first_char'=>'S'),
  133. -7226=>array('word'=>"闫",'first_char'=>'Y'),
  134. -9293=>array('word'=>"鄢",'first_char'=>'Y'),
  135. -6205=>array('word'=>"缑",'first_char'=>'G'),
  136. -9764=>array('word'=>"佘",'first_char'=>'S'),
  137. -9818=>array('word'=>"佴",'first_char'=>'N'),
  138. -9509=>array('word'=>"谯",'first_char'=>'Q'),
  139. -3122=>array('word'=>"笪",'first_char'=>'D'),
  140. -9823=>array('word'=>"佟",'first_char'=>'T'),
  141. );
  142. if(array_key_exists($asc, $rare_arr) && $rare_arr[$asc]['first_char']){
  143. return $rare_arr[$asc]['first_char'] ;
  144. }else{
  145. return null;
  146. }
  147. }
  148. //测试:
  149. echo getFirstCharters('窦');
  150.  

运行结果:

D

希望本文所述对大家PHP程序设计有所帮助。

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