按字母数字(第一个数字，然后是字母）按值对多维数组进行排序

foreach ($countries as $key => $row) {
    $year[$key]  = $row[0];
}

array_multisort($year, SORT_ASC, $countries);

您必须按函数array_multisort多维数组进行排序。

首先，您必须准备排序数组，然后应用排序本身：

$sortArr = array();
// prepare the sorting array
foreach ($arrayToSort as $row) {
  $sortArr[] = $row[0];  // put there the year value
}
// sorting - first param is helper array, then constant with sorting direction, third param is array you wish to sort
array_multisort($sortArr, SORT_ASC, $arrayToSort);

尝试使用 usort。查看文档中的示例 #2 （http://www.php.net/manual/en/function.usort.php):

示例 #2 usort（） 示例使用多维数组

<?php
function cmp($a, $b)
{
    return strcmp($a["fruit"], $b["fruit"]);
}
$fruits[0]["fruit"] = "lemons";
$fruits[1]["fruit"] = "apples";
$fruits[2]["fruit"] = "grapes";
usort($fruits, "cmp");
while (list($key, $value) = each($fruits)) {
    echo "'$fruits[$key]: " . $value["fruit"] . "'n";
}
?>

对多维数组进行排序时，$a 和 $b 包含引用 到数组的第一个索引。上面的示例将输出：

$fruits[0]: apples
$fruits[1]: grapes
$fruits[2]: lemons

我已经复制了你的数组，使其没有键值，如下所示：

$test = array (Array (  '2013 Germany',  'country',  'Berlin ', 'Beer'),
Array (  '2012 Italy' , 'country'  , 'Rome',  'Wine'  ),
Array (  '2013 Germany' , 'country' ,  'Munich' ,  'Beer' ),
Array (  '2013 Germany',  'country' ,  'Dusseldorf',  'Beer' ),
Array (  '2013 Italy' , 'country' ,  'Venice' , 'Wine' )
);

之后我使用了：

asort($test);
$test = array_values($test);    
print_r($test);

输出是：

Array
(
    [0] => Array
        (
            [0] => 2012 Italy
            [1] => country
            [2] => Rome
            [3] => Wine
        )
    [1] => Array
        (
            [0] => 2013 Germany
            [1] => country
            [2] => Berlin 
            [3] => Beer
        )
    [2] => Array
        (
            [0] => 2013 Germany
            [1] => country
            [2] => Dusseldorf
            [3] => Beer
        )
    [3] => Array
        (
            [0] => 2013 Germany
            [1] => country
            [2] => Munich
            [3] => Beer
        )
    [4] => Array
        (
            [0] => 2013 Italy
            [1] => country
            [2] => Venice
            [3] => Wine
        )
)

希望你正在寻找这个。