Get Chinese Initials program code _php Tutorial in PHP

We often see a number of sites by city name or alphabetical ranking, I would like to introduce how this thing to achieve it, we share a section of the use of PHP to obtain the Chinese characters in the first character of the letter.

The code is as follows

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Cases !--? php $limit = Array (//gb2312 phonetic sort Array (45217,45252),//a Array (45253,45760),//b Array (45761 , 46317),//c Array (46318,46825),//d Array (46826,47009),//e Array (47010,47296),//f Array (47297,47613 ),//g Array (47614,48118),//h Array (0,0),//i Array (48119,49061),//j Array (49062,49323),//k Array (49324,49895),//l Array (49896,50370),//m Array (50371,50613),//n Array (50614,50621),//o Array ( 50622,50905),//p Array (50906,51386),//q Array (51387,51445),//r Array (51446,52217),//s Array ( 52218,52697),//t Array (0,0),//u Array (0,0),//v Array (52698,52979),//w Array (52980,53688),//x Array (53689,54480),//y Array (54481,55289),//z ); $str = "A: This is a test program 1"; $str = Iconv ("UTF-8", "gb2312", $str); echo $str. " "; $i = 0; while ($i $tmp =bin2hex (substr ($str, $i, 1)); if ($tmp >= ' B0 ') {//start of Kanji $t =getletter (Hexdec (Bin2Hex (substr ($str, $i, 2))); printf ("%c", $t ==-1? ' * ': $t); $i +=2; } else{ printf ("%s", substr ($str, $i, 1)); $i + +; } } function Getletter ($num) { Global $limit; $char _index=65; foreach ($limit as $k = = $v) { if ($num >= $v [0] && $num <= $v [1]) { $char _index+= $k; return $char _index; } } return-1; } ?>

It is based on Chinese pinyin to determine its ASCII code to calculate the OH.

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