Introduction to the method of extracting the first letters of Chinese and English words and numbers using PHP_PHP Tutorial

A recent project has a requirement to extract the first letter of each word from a massive vocabulary database in Chinese and English (including Arabic numerals 0-9):

gannicus——>G

Freedom——>Z

2B——>E

Silly X——>S

Copy code The code is as follows:

private function getfirstchar($s0){
        $s=iconv('UTF-8','gb2312', $s0);
        if (ord($s0)>128) { //汉字开头
            $asc=ord($s{0})*256+ord($s{1})-65536;
            if($asc>=-20319 and $asc<=-20284)return "A";
            if($asc>=-20283 and $asc<=-19776)return "B";
            if($asc>=-19775 and $asc<=-19219)return "C";
            if($asc>=-19218 and $asc<=-18711)return "D";
            if($asc>=-18710 and $asc<=-18527)return "E";
            if($asc>=-18526 and $asc<=-18240)return "F";
            if($asc>=-18239 and $asc<=-17923)return "G";
            if($asc>=-17922 and $asc<=-17418)return "I";             
            if($asc>=-17417 and $asc<=-16475)return "J";             
            if($asc>=-16474 and $asc<=-16213)return "K";             
            if($asc>=-16212 and $asc<=-15641)return "L";             
            if($asc>=-15640 and $asc<=-15166)return "M";             
            if($asc>=-15165 and $asc<=-14923)return "N";             
            if($asc>=-14922 and $asc<=-14915)return "O";             
            if($asc>=-14914 and $asc<=-14631)return "P";             
            if($asc>=-14630 and $asc<=-14150)return "Q";             
            if($asc>=-14149 and $asc<=-14091)return "R";             
            if($asc>=-14090 and $asc<=-13319)return "S";             
            if($asc>=-13318 and $asc<=-12839)return "T";             
            if($asc>=-12838 and $asc<=-12557)return "W";             
            if($asc>=-12556 and $asc<=-11848)return "X";             
            if($asc>=-11847 and $asc<=-11056)return "Y";             
            if($asc>=-11055 and $asc<=-10247)return "Z"; 
        }else if(ord($s)>=48 and ord($s)<=57){ //Start with a number
                                                                                                                                                           Since 🎜>                                                                                                                          case 4:return "S";
case 5:return "W";
case 6:return "L";
case 7:return "Q";
case 8:return "B";
case 9:return "J ",
                                                                                                                                                                                                                                                                                                     return strtoupper(substr($s,0,1));
}
else
Mixed words are not suitable for the above situations, so you can directly extract the first character
}

}


Remaining issues: There are still a small number of words that cannot be extracted. If Eternal is immortal, the G has not been extracted

The final effect is as shown below:

http://www.bkjia.com/PHPjc/326814.html
www.bkjia.com

true

http: //www.bkjia.com/PHPjc/326814.html

TechArticle

A recent project has a requirement. In a massive vocabulary library of Chinese and English (including Arabic numerals 0-9), Extract the first letter of each word: gannicus - G free - Z 2B - E silly...