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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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²ÎÊýÖеÄÊý×é±»µ±³ÉÒ»¸ö±íµÄÁв¢ÒÔÐÐÀ´½øÐÐÅÅÐò - ÕâÀàËÆ SQL µÄ ORDER BY ×Ó¾äµÄ¹¦ÄÜ¡£µÚÒ»¸öÊý×éÊÇÒªÅÅÐòµÄÖ÷ÒªÊý×é¡£Êý×éÖеÄÐУ¨Öµ£©±È½ÏΪÏàͬµÄ»°£¬¾Í»á°´ÕÕÏÂÒ»¸öÊäÈëÊý×éÖÐÏàÓ¦ÖµµÄ´óС½øÐÐÅÅÐò£¬ÒÀ´ËÀàÍÆ¡£
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SORT_ASC - ĬÈÏ£¬°´ÉýÐòÅÅÁС£(A-Z)
SORT_DESC - °´½µÐòÅÅÁС£(Z-A)
Ëæºó¿ÉÒÔÖ¸¶¨ÅÅÐòµÄÀàÐÍ£º
SORT_REGULAR - ĬÈÏ¡£½«Ã¿Ò»Ïî°´³£¹æË³ÐòÅÅÁС£
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
±ØÐè¡£¹æ¶¨ÊäÈëµÄÊý×é¡£
sorting order
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sorting type
¿ÉÑ¡¡£¹æ¶¨ÅÅÐòÀàÐÍ¡£¿ÉÄܵÄÖµÊÇSORT_REGULAR¡¢SORT_NUMERICºÍSORT_STRING¡£
array2
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array3
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