php 数组去重计数

countArray.php

<?php

// 原始数组
$primitiveArray = [
    [1, 2, ''],
    [2, ''],
    [2, ''],
    [2, 4, ''],
    [1, 2, 3, ''],
    [2, 3, ''],
];

// 计数数组
$countedData = [];
foreach ($primitiveArray as $arr) {

    foreach ($arr as $value) {

        if (empty($value)) {
            continue;
        }

        if (!isset($countedData[$value])) {
            $countedData[$value] = ['counts' => 0, 'name' => $value];
        }

        $countedData[$value]['counts']++;
    }
}

print_r(array_values($countedData));