php按照中文首字母排序

1> 网络上很多php的工具类可以将汉字转为拼音;

2> 将拼音进行排序即可

另一种则是类似mysql转码方式:

1     foreach ($array as $key=>$value)
2 {
3 $new_array[$key] = iconv('UTF-8', 'GBK', $value);
4 } 1 foreach ($array as $key=>$value)
2 {
3 $new_array[$key] = iconv('UTF-8', 'GBK', $value);
4 }
5 asort($new_array);
6 foreach ($new_array as $key=>$value)
7 {
8 $array[$key] = iconv('GBK', 'UTF-8', $value);
9 }
5 asort($new_array);
6 foreach ($new_array as $key=>$value)
7 {
8 $array[$key] = iconv('GBK', 'UTF-8', $value);
9 }

综合案列

//按中文首字母排序
function orderByName($userName,$order='asc',$key='jlname'){
foreach($userName as $name){
if(is_array($name))$char = getFirstChar($name[$key]);
elseif(is_string($name))$char= getFirstChar($name);
$nameArray = array();//将姓名按照姓的首字母与相对的首字母键进行配对
if(count($charArray[$char])!=0)$nameArray = $charArray[$char];
array_push($nameArray,$name);
$charArray[$char] = $nameArray;
}
if(strtolower($order)=='asc')ksort($charArray);elseif(strtolower($order)=='desc')krsort($charArray);
$newarr = array();
$i=0;
foreach($charArray as $ck=>$cv){
if(is_array($cv)){
foreach($cv as $cck=>$ccv){
$newarr[$i++] = $ccv;
}
}else{
$newarr[$i++]=$cv;
}
}
/*echo '按首字母排序前:<br>';
print_r($charArray);
//根据键值对排序
echo '按首字母排序后:<br>';
print_r($charArray);*/
return $newarr;
}
//获取中文的首字母
function getFirstChar($s){
$s0 = mb_substr($s,0,1,'utf-8');//获取名字的姓
$s = iconv('UTF-8','GBK', $s0);//将UTF-8转换成GB2312编码
if(ord($s0)>128){//汉字开头,汉字没有以U、V开头的
$asc=ord($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 $asc<=-17760)return "G";
if($asc>=-17759 and $asc<=-17248)return "H";
if($asc>=-17247 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 $asc<=-10247)return "Z";
}elseif(ord($s)>=48 and ord($s)<=57){//数字开头
switch(iconv_substr($s,0,1,'utf-8')){
case 1:return "Y";
case 2:return "E";
case 3:return "S";
case 4:return "S";
case 5:return "W";
case 6:return "L";
case 7:return "Q";
case 8:return "B";
case 9:return "J";
case 0:return "L";
}
}else if(ord($s)>=65 and ord($s)<=90){//大写英文开头
return substr($s,0,1);
}else if(ord($s)>=97 and ord($s)<=122){//小写英文开头
return strtoupper(substr($s,0,1));
}else{
return iconv_substr($s0,0,1,'utf-8');//中英混合的词语提取首个字符即可
}
}

mysql实现

如果当前数据库编码是utf-8,则进行转码,转为gbk,gbk默认汉字按照拼音排序存放:

1 SELECT * FROM USER ORDER BY convert(uname using gbk) ASC

如果当前编码为gbk则:

1 SELECT * FROM USER ORDER BY uname ASC
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