PHP 配列をマージするときに三項式を使用して効率を最適化するにはどうすればよいですか?

$result = $condition ? $true_value : $false_value;

<?php

$array1 = ['apple', 'banana', 'cherry'];
$array2 = ['dog', 'cat', 'fish'];
$array3 = ['house', 'car', 'boat'];

// 使用三元表达式优化后的合并
$merged_array = $array1 ? array_merge($array1, $array2, $array3) : [];

// 使用传统的 array_merge() 合并
$traditional_merged_array = array_merge($array1, $array2, $array3);

echo '<pre class="brush:php;toolbar:false">';
print_r($merged_array);
print_r($traditional_merged_array);
echo '

Array
(
    [0] => apple
    [1] => banana
    [2] => cherry
    [3] => dog
    [4] => cat
    [5] => fish
    [6] => house
    [7] => car
    [8] => boat
)
Array
(
    [0] => apple
    [1] => banana
    [2] => cherry
    [3] => dog
    [4] => cat
    [5] => fish
    [6] => house
    [7] => car
    [8] => boat
)