php 获得汉字拼音首字母的函数_php技巧

php 获得汉字拼音首字母的函数，大家可以自行测试。

php获取汉字拼音的第一个字母

代码如下:

<?php 
function getinitial($str) 
{ 
$asc=ord(substr($str,0,1)); 
if ($asc<160) //非中文 
{ 
if ($asc>=48 && $asc<=57){ 
return &#39;1&#39;; //数字 
}elseif ($asc>=65 && $asc<=90){ 
return chr($asc); // A--Z 
}elseif ($asc>=97 && $asc<=122){ 
return chr($asc-32); // a--z 
}else{ 
return &#39;~&#39;; //其他 
} 
} 
else //中文 
{ 
$asc=$asc*1000+ord(substr($str,1,1)); 
//获取拼音首字母A--Z 
if ($asc>=176161 && $asc<176197){ 
return &#39;A&#39;; 
}elseif ($asc>=176197 && $asc<178193){ 
return &#39;B&#39;; 
}elseif ($asc>=178193 && $asc<180238){ 
return &#39;C&#39;; 
}elseif ($asc>=180238 && $asc<182234){ 
return &#39;D&#39;; 
}elseif ($asc>=182234 && $asc<183162){ 
return &#39;E&#39;; 
}elseif ($asc>=183162 && $asc<184193){ 
return &#39;F&#39;; 
}elseif ($asc>=184193 && $asc<185254){ 
return &#39;G&#39;; 
}elseif ($asc>=185254 && $asc<187247){ 
return &#39;H&#39;; 
}elseif ($asc>=187247 && $asc<191166){ 
return &#39;J&#39;; 
}elseif ($asc>=191166 && $asc<192172){ 
return &#39;K&#39;; 
}elseif ($asc>=192172 && $asc<194232){ 
return &#39;L&#39;; 
}elseif ($asc>=194232 && $asc<196195){ 
return &#39;M&#39;; 
}elseif ($asc>=196195 && $asc<197182){ 
return &#39;N&#39;; 
}elseif ($asc>=197182 && $asc<197190){ 
return &#39;O&#39;; 
}elseif ($asc>=197190 && $asc<198218){ 
return &#39;P&#39;; 
}elseif ($asc>=198218 && $asc<200187){ 
return &#39;Q&#39;; 
}elseif ($asc>=200187 && $asc<200246){ 
return &#39;R&#39;; 
}elseif ($asc>=200246 && $asc<203250){ 
return &#39;S&#39;; 
}elseif ($asc>=203250 && $asc<205218){ 
return &#39;T&#39;; 
}elseif ($asc>=205218 && $asc<206244){ 
return &#39;W&#39;; 
}elseif ($asc>=206244 && $asc<209185){ 
return &#39;X&#39;; 
}elseif ($asc>=209185 && $asc<212209){ 
return &#39;Y&#39;; 
}elseif ($asc>=212209){ 
return &#39;Z&#39;; 
}else{ 
return &#39;~&#39;; 
} 
} 
} 
echo getinitial("脚本"); 
?>

代码如下:

function getfirstchar($s0){ 
$firstchar_ord=ord(strtoupper($s0{0})); 
if (($firstchar_ord>=65 and $firstchar_ord<=91)or($firstchar_ord>=48 and $firstchar_ord<=57)) return $s0{0}; 
$s=iconv("UTF-8","gb2312", $s0); 
$asc=ord($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 $asc<=-17418)return "H"; 
if($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"; 
return null; 
} 
echo getfirstchar("哈哈");