Detailed explanation of how to sort php arrays in pinyin order

This article mainly introduces the method of sorting arrays in Pinyin order in PHP, involving the conversion of Chinese characters and Pinyin in PHP and related operation skills of array traversal and sorting. Friends in need can refer to the following

1. Question:

The given array is required to be sorted according to the first letter of its Chinese characters:

$pinyin = array(
  array('name'=>'梁朝伟','age'=>23),
  array('name'=>'andy','age'=>24),
  array('name'=>'黎明','age'=>19),
  array('name'=>'郭富城','age'=>20)
);

2. Solution:

=ord('A')&&$fchar<=ord('z')) return strtoupper($str{0});
  $s1=iconv('UTF-8','gb2312',$str);
  $s2=iconv('gb2312','UTF-8',$s1);
  $s=$s2==$str?$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;
}
$pinyin = array(
  array(&#39;name&#39;=>&#39;梁朝伟&#39;,&#39;age&#39;=>23),
  array(&#39;name&#39;=>&#39;andy&#39;,&#39;age&#39;=>24),
  array(&#39;name&#39;=>&#39;黎明&#39;,&#39;age&#39;=>19),
  array(&#39;name&#39;=>&#39;郭富城&#39;,&#39;age&#39;=>20)
);
$sort = array();
foreach($pinyin as $key => $item) {
  $py = zhcnToPinyin($item['name']);
  $pinyin[$key]['pinyin'] = $py;
  $sort[] = $py;
}
array_multisort($sort, SORT_ASC, $pinyin);
var_dump($pinyin);
?>

The running results are as follows:

array(4) {
 [0]=>
 array(3) {
  ["name"]=>
  string(4) "andy"
  ["age"]=>
  int(24)
  ["pinyin"]=>
  string(1) "A"
 }
 [1]=>
 array(3) {
  ["name"]=>
  string(6) "郭富城"
  ["age"]=>
  int(20)
  ["pinyin"]=>
  string(1) "G"
 }
 [2]=>
 array(3) {
  ["name"]=>
  string(4) "黎明"
  ["age"]=>
  int(19)
  ["pinyin"]=>
  string(1) "L"
 }
 [3]=>
 array(3) {
  ["name"]=>
  string(6) "梁朝伟"
  ["age"]=>
  int(23)
  ["pinyin"]=>
  string(1) "L"
 }
}

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