class="php"><?php
header('Content-Type: text/html; charset=utf-8');
$str="阅谁问君诵，水落清香浮";
echo getFirstCharCode($str);
function getFirstCharCode($str){
$str= iconv("UTF-8","gb2312", $str);
$targetChar='*';
$i=0;
while($i
$tmp=bin2hex(substr($str,$i,1));
if($tmp>='B0'){
$t=getLetter(hexdec(bin2hex(substr($str,$i,2))));
$targetChar=$t==-1 ? '*' : $t ;
break;
}else{
$targetChar=substr($str,$i,1);
break;
}
}
if(is_numeric($targetChar)){
return chr($targetChar);
}else{
return $targetChar;
}
}
function getLetter($num){
$limit=array( //gb2312 拼音排序
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
);
$char_index=65;
foreach($limit as $k=>$v){
if($num>=$v[0] && $num<=$v[1]){
$char_index+=$k;
return $char_index;
}
}
return -1;
}
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效果图：
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demo.rar (870 Bytes)
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