How to get the first letter of Chinese pinyin in php_php tips

In reality, we often see instructions like this, in no particular order, sorted by initials. This is the sorting method used by most Chinese people. So how to operate it in php program?

The following will share the method of obtaining the first letter of Chinese pinyin in the PHP program. Most of the methods found on the Internet are problematic. This method has been applied by the editor in practice and it can really be used.

//php获取中文字符拼音首字母 
function getFirstCharter($str){ 
 if(empty($str)){return '';} 
 $fchar=ord($str{0}); 
 if($fchar>=ord('A')&&$fchar<=ord('z')) return strtoupper($str{0}); 
 $s1=iconv('UTF-8','gb2312',$str); 
 $s2=iconv('gb2312','UTF-8',$s1); 
 $s=$s2==$str&#63;$s1:$str; 
 $asc=ord($s{0})*256+ord($s{1})-65536; 
 if($asc>=-20319&&$asc<=-20284) return 'A'; 
 if($asc>=-20283&&$asc<=-19776) return 'B'; 
 if($asc>=-19775&&$asc<=-19219) return 'C'; 
 if($asc>=-19218&&$asc<=-18711) return 'D'; 
 if($asc>=-18710&&$asc<=-18527) return 'E'; 
 if($asc>=-18526&&$asc<=-18240) return 'F'; 
 if($asc>=-18239&&$asc<=-17923) return 'G'; 
 if($asc>=-17922&&$asc<=-17418) return 'H'; 
 if($asc>=-17417&&$asc<=-16475) return 'J'; 
 if($asc>=-16474&&$asc<=-16213) return 'K'; 
 if($asc>=-16212&&$asc<=-15641) return 'L'; 
 if($asc>=-15640&&$asc<=-15166) return 'M'; 
 if($asc>=-15165&&$asc<=-14923) return 'N'; 
 if($asc>=-14922&&$asc<=-14915) return 'O'; 
 if($asc>=-14914&&$asc<=-14631) return 'P'; 
 if($asc>=-14630&&$asc<=-14150) return 'Q'; 
 if($asc>=-14149&&$asc<=-14091) return 'R'; 
 if($asc>=-14090&&$asc<=-13319) return 'S'; 
 if($asc>=-13318&&$asc<=-12839) return 'T'; 
 if($asc>=-12838&&$asc<=-12557) return 'W'; 
 if($asc>=-12556&&$asc<=-11848) return 'X'; 
 if($asc>=-11847&&$asc<=-11056) return 'Y'; 
 if($asc>=-11055&&$asc<=-10247) return 'Z'; 
 return null; 
} 

For example:

echo getFirstCharter('脚本之家www.jb51.net');//结果将输出：J 

The above is the function of PHP to obtain the first letter of Chinese pinyin. I hope it can help everyone learn PHP programming better.