對2維數組或者多維數組排序是常見的問題，在php中我們有個專門的多維數組排序函數，下面簡單介紹下：

array_multisort(array1,sorting order, sorting type,array2,array3..）是對多個數組或多維數組進行排序的函數。

參數中的數組被當成一個表的列并以行來進行排序 - 這類似 SQL 的 ORDER BY 子句的功能。第一個數組是要排序的主要數組。數組中的行（值）比較為相同的話，就會按照下一個輸入數組中相應值的大小進行排序，依此類推。

第一個參數是數組，隨后的每一個參數可能是數組，也可能是下面的排序順序標志（排序標志用于更改默認的排列順序）之一：

隨后可以指定排序的類型：

<?php	function my_sort($arrays,$sort_key,$sort_order=SORT_ASC,$sort_type=SORT_NUMERIC ){ 		if(is_array($arrays)){ 			foreach ($arrays as $array){ 				if(is_array($array)){ 					$key_arrays[] = $array[$sort_key]; 				}else{ 					return false; 				} 			} 		}else{ 			return false; 		}		array_multisort($key_arrays,$sort_order,$sort_type,$arrays); 		return $arrays; 	}	$person =  array(					array('id'=>1,'name'=>'fj','weight'=>100,'height'=>180),					array('id'=>2,'name'=>'tom','weight'=>53,'height'=>150),					array('id'=>3,'name'=>'jerry','weight'=>120,'height'=>156),					array('id'=>4,'name'=>'bill','weight'=>110,'height'=>190),					array('id'=>5,'name'=>'linken','weight'=>80,'height'=>200),					array('id'=>6,'name'=>'madana','weight'=>95,'height'=>110),					array('id'=>7,'name'=>'jordan','weight'=>70,'height'=>170)				);		var_dump($person);		$person = my_sort($person,'name',SORT_ASC,SORT_STRING);	var_dump($person);		$person = my_sort($person,'weight');	var_dump($person);?>

array (size=7)  0 =>     array (size=4)      'id' => int 1      'name' => string 'fj' (length=2)      'weight' => int 100      'height' => int 180  1 =>     array (size=4)      'id' => int 2      'name' => string 'tom' (length=3)      'weight' => int 53      'height' => int 150  2 =>     array (size=4)      'id' => int 3      'name' => string 'jerry' (length=5)      'weight' => int 120      'height' => int 156  3 =>     array (size=4)      'id' => int 4      'name' => string 'bill' (length=4)      'weight' => int 110      'height' => int 190  4 =>     array (size=4)      'id' => int 5      'name' => string 'linken' (length=6)      'weight' => int 80      'height' => int 200  5 =>     array (size=4)      'id' => int 6      'name' => string 'madana' (length=6)      'weight' => int 95      'height' => int 110  6 =>     array (size=4)      'id' => int 7      'name' => string 'jordan' (length=6)      'weight' => int 70      'height' => int 170

array (size=7)  0 =>     array (size=4)      'id' => int 4      'name' => string 'bill' (length=4)      'weight' => int 110      'height' => int 190  1 =>     array (size=4)      'id' => int 1      'name' => string 'fj' (length=2)      'weight' => int 100      'height' => int 180  2 =>     array (size=4)      'id' => int 3      'name' => string 'jerry' (length=5)      'weight' => int 120      'height' => int 156  3 =>     array (size=4)      'id' => int 7      'name' => string 'jordan' (length=6)      'weight' => int 70      'height' => int 170  4 =>     array (size=4)      'id' => int 5      'name' => string 'linken' (length=6)      'weight' => int 80      'height' => int 200  5 =>     array (size=4)      'id' => int 6      'name' => string 'madana' (length=6)      'weight' => int 95      'height' => int 110  6 =>     array (size=4)      'id' => int 2      'name' => string 'tom' (length=3)      'weight' => int 53      'height' => int 150

array (size=7)  0 =>     array (size=4)      'id' => int 2      'name' => string 'tom' (length=3)      'weight' => int 53      'height' => int 150  1 =>     array (size=4)      'id' => int 7      'name' => string 'jordan' (length=6)      'weight' => int 70      'height' => int 170  2 =>     array (size=4)      'id' => int 5      'name' => string 'linken' (length=6)      'weight' => int 80      'height' => int 200  3 =>     array (size=4)      'id' => int 6      'name' => string 'madana' (length=6)      'weight' => int 95      'height' => int 110  4 =>     array (size=4)      'id' => int 1      'name' => string 'fj' (length=2)      'weight' => int 100      'height' => int 180  5 =>     array (size=4)      'id' => int 4      'name' => string 'bill' (length=4)      'weight' => int 110      'height' => int 190  6 =>     array (size=4)      'id' => int 3      'name' => string 'jerry' (length=5)      'weight' => int 120      'height' => int 156

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