一个数组键和第二个数组值的差异

Question

I have two arrays:

First Array

[
    'Test' => 1, 
    'Test2' => 2, 
    'Test3' => 3,
    ...
]

Second Array

[
    '0' => 'Test', 
    '1' => 'SomeTest',
    ...
]

I want to get difference of first array keys and second array values.

Result Array

[
    'Test2' => 2, 
    'Test3' => 3
]

Answer 1

Use array_flip() and array_diff()

$firstArray = [
    'Test' => 1, 
    'Test2' => 2, 
    'Test3' => 3
];

$secondArray = [
    '0' => 'Test', 
    '1' => 'SomeTest'
];

$result = array_diff($firstArray, array_flip($secondArray));

print_r($result);
exit;