如何在PHP中组合关联数组和索引数组

<?php

// 索引数组
$indexArray = ['apple', 'banana', 'cherry'];

// 关联数组
$assocArray = [
    'fruit1' => 'apple',
    'fruit2' => 'banana',
    'fruit3' => 'cherry'
];

// 组合索引数组和关联数组
$combinedArray = array_map(function($value) use ($assocArray) {
    return [
        'index' => $value,
        'assoc' => $assocArray['fruit' . ($value === 'apple' ? '1' : ($value === 'banana' ? '2' : '3'))]
    ];
}, $indexArray);

print_r($combinedArray);

Array
(
    [0] => Array
        (
            [index] => apple
            [assoc] => apple
        )

    [1] => Array
        (
            [index] => banana
            [assoc] => banana
        )

    [2] => Array
        (
            [index] => cherry
            [assoc] => cherry
        )
)

$combinedArray = [];
foreach ($indexArray as $key => $value) {
    $combinedArray[] = [
        'index' => $value,
        'assoc' => $assocArray['fruit' . ($key + 1)]
    ];
}