瑕佸皢浜岀淮鏁扮粍闄嶅簭鎺掑垪锛屽彲浠ヤ娇鐢≒HP鐨剈sort()鍑芥暟鏉ュ疄鐜般€倁sort()鍑芥暟浣跨敤鑷畾涔夌殑姣旇緝鍑芥暟瀵规暟缁勮繘琛屾帓搴忋€?/p>

浠ヤ笅鏄竴涓ず渚嬩唬鐮侊細

// 鑷畾涔夋瘮杈冨嚱鏁?/span>
function compare($a, $b) {
    // 鎸夌涓€涓厓绱犻檷搴忔帓鍒?/span>
    if ($a[0] > $b[0]) {
        return -1;
    } elseif ($a[0] < $b[0]) {
        return 1;
    } else {
        return 0;
    }
}

// 浜岀淮鏁扮粍
$array = array(
    array(5, 'apple'),
    array(3, 'banana'),
    array(8, 'orange'),
    array(2, 'grape')
);

// 浣跨敤usort()鍑芥暟瀵逛簩缁存暟缁勮繘琛屾帓搴?/span>
usort($array, 'compare');

// 杈撳嚭鎺掑簭鍚庣殑鏁扮粍
print_r($array);

杩愯浠ヤ笂浠ｇ爜锛屽皢浼氳緭鍑轰互涓嬬粨鏋滐細

Array
(
    [0] => Array
        (
            [0] => 8
            [1] => orange
        )

    [1] => Array
        (
            [0] => 5
            [1] => apple
        )

    [2] => Array
        (
            [0] => 3
            [1] => banana
        )

    [3] => Array
        (
            [0] => 2
            [1] => grape
        )

)

鍙互鐪嬪埌锛屼簩缁存暟缁勫凡鎸夌涓€涓厓绱犻檷搴忔帓鍒椼€?/p>