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<?php
$array[] = array("id"=>20,"name"=>"li");
$array[] = array("id"=>21,"name"=>"ai");
$array[] = array("id"=>20,"name"=>"ci");
$array[] = array("id"=>22,"name"=>"di");
 
foreach ($array as $key=>$value){
 $age[$key] = $value['id'];
 
}
array_multisort($age,SORT_NUMERIC,SORT_ASC,$array);
print_r($array);
?>
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Array (
[0] => Array ( [id] => 20 [name] => ci )
[1] => Array ( [id] => 20 [name] => li )
[2] => Array ( [id] => 21 [name] => ai )
[3] => Array ( [id] => 22 [name] => di )
)
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SORT_DESC - °´½µÐòÅÅÁС£(Z-A)
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SORT_NUMERIC - ½«Ã¿Ò»Ïî°´Êý×Ö˳ÐòÅÅÁС£
SORT_STRING - ½«Ã¿Ò»Ïî°´×Öĸ˳ÐòÅÅÁС£
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array_multisort(array1,sorting order,sorting type,array2,array3...)
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array1
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sorting order
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sorting type
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array2
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array3
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$link=mysql_connect("localhost","root","root");
$db=mysql_select_db("bustest",$link);
$sql1="select name from info group by name order by id asc";
print("<table border='1'>");
$res1=mysql_query($sql1);
while($row1=mysql_fetch_array($res1)){
$name=$row1["name"];
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