检查数组的所有项是否在另一个关联数组中可用？

Question

I have 2 arrays as given below. I want to check if all items of first array $arrayA are available in $arrayB against key fruit. How I can do that?

<?php
$arrayA = ['apple', 'guava'];
$arrayB = [
            ['fruit' => 'apple','vegetables' => 'potato'],
            ['fruit' => 'guava','vegetables' => 'onion']
          ];

 $containsSearch = count(array_intersect($arrayA, $arrayB)) == count($arrayA);

 var_dump($containsSearch);

Above code returns error:

PHP Notice: Array to string conversion in /var/www/html/test/b.php on line 8

Answer 1

You probably want to use array_column() as you only want to use the fruit key. This should then be:

// array_column($arrayB, 'fruit') instead of $arrayB
$containsSearch = count(array_intersect($arrayA, array_column($arrayB, 'fruit'))) == count($arrayA);