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原文:php基础篇-二维数组排序 array_multisort
对2维数组或者多维数组排序是常见的问题，在php中我们有个专门的多维数组排序函数，下面简单介绍下：
array_multisort(array1,sorting order, sorting type,array2,array3..）是对多个数组或多维数组进行排序的函数。
| array1 | 必需。规定输入的数组。 |
| sorting order | 可选。规定排列顺序。可能的值是 SORT_ASC 和 SORT_DESC。 |
| sorting type | 可选。规定排序类型。可能的值是SORT_REGULAR、SORT_NUMERIC和SORT_STRING。 |
| array2 | 可选。规定输入的数组。 |
| array3 | 可选。规定输入的数组。 |
参数中的数组被当成一个表的列并以行来进行排序 - 这类似 SQL 的 ORDER BY 子句的功能。第一个数组是要排序的主要数组。数组中的行（值）比较为相同的话，就会按照下一个输入数组中相应值的大小进行排序，依此类推。
第一个参数是数组，随后的每一个参数可能是数组，也可能是下面的排序顺序标志（排序标志用于更改默认的排列顺序）之一：
随后可以指定排序的类型：
<?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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原文地址：http://www.cnblogs.com/lonelyxmas/p/5930526.html
