PHP中二维数组的排序方法

本文介绍的是从 BugFree 摘录来的二维数组排序函数，可以实现类似 MySQL 的 ORDER BY 效果，当数组不是从数据库取得时会有特殊应用。 


PHP:

 
 
// 说明：PHP中二维数组的排序方法 
// 整理： 
 
/** 
 * @package     BugFree 
 * @version     $Id: FunctionsMain.inc.php,v 1.32 2005/09/24 11:38:37 wwccss Exp $ 
 * 
 * 
 * Sort an two-dimension array by some level two items use array_multisort() function. 
 * 
 * sysSortArray($Array,"Key1","SORT_ASC","SORT_RETULAR","Key2"……) 
 * @author                      Chunsheng Wang  
 * @param  array   $ArrayData   the array to sort. 
 * @param  string  $KeyName1    the first item to sort by. 
 * @param  string  $SortOrder1  the order to sort by("SORT_ASC"|"SORT_DESC") 
 * @param  string  $SortType1   the sort type("SORT_REGULAR"|"SORT_NUMERIC"|"SORT_STRING") 
 * @return array                sorted array. 
 */ 
function sysSortArray($ArrayData,$KeyName1,$SortOrder1 = "SORT_ASC",$SortType1 = "SORT_REGULAR") 
{ 
    if(!is_array($ArrayData)) 
    { 
        return $ArrayData; 
    } 
 
    // Get args number. 
    $ArgCount = func_num_args(); 
 
    // Get keys to sort by and put them to SortRule array. 
    for($I = 1;$I < $ArgCount;$I ++) 
    { 
        $Arg = func_get_arg($I); 
        if(!eregi("SORT",$Arg)) 
        { 
            $KeyNameList[] = $Arg; 
            $SortRule[]    = '$'.$Arg; 
        } 
        else 
        { 
            $SortRule[]    = $Arg; 
        } 
    } 
 
    // Get the values according to the keys and put them to array. 
    foreach($ArrayData AS $Key => $Info) 
    { 
        foreach($KeyNameList AS $KeyName) 
        { 
            ${$KeyName}[$Key] = $Info[$KeyName]; 
        } 
    } 
 
    // Create the eval string and eval it. 
    $EvalString = 'array_multisort('.join(",",$SortRule).',$ArrayData);'; 
    eval ($EvalString); 
    return $ArrayData; 
} 
 
 
//################# 示例 ################# 
$arr = array( 
    array( 
        'name'        =>    '学习', 
        'size'        =>    '1235', 
        'type'        =>    'jpe', 
        'time'        =>    '1921-11-13', 
        'class'        =>    'dd', 
    ), 
    array( 
        'name'        =>    '中国功夫', 
        'size'        =>    '153', 
        'type'        =>    'jpe', 
        'time'        =>    '2005-11-13', 
        'class'        =>    'jj', 
    ), 
    array( 
        'name'        =>    '编程', 
        'size'        =>    '35', 
        'type'        =>    'gif', 
        'time'        =>    '1997-11-13', 
        'class'        =>    'dd', 
    ), 
    array( 
        'name'        =>    '中国功夫', 
        'size'        =>    '65', 
        'type'        =>    'jpe', 
        'time'        =>    '1925-02-13', 
        'class'        =>    'yy', 
    ), 
    array( 
        'name'        =>    '中国功夫', 
        'size'        =>    '5', 
        'type'        =>    'icon', 
        'time'        =>    '1967-12-13', 
        'class'        =>    'rr', 
    ), 
); 
 
print_r($arr); 
 
//注意：按照数字方式排序时 153 比 65 小 
$temp = sysSortArray($arr,"name","SORT_ASC","type","SORT_DESC","size","SORT_ASC","SORT_STRING"); 
 
print_r($temp); 
 
?>