在PHP中比较数组的键

Question

Here is my First Array

$array1 = [
        'A' => 'Apple',
        'B' => 'Ball',
        'C' => 'Cat',
        'E' => 'Eagle',
        'F' => 'Fan'
    ];

Second Array

$array2 = [
        'A' => 'apple is a fruit',
        'B' => 'ball is used to play',
        'C' => 'cat is an animal',
        'D' => '',
        'E' => 'eagle is a bird',
        'F' => ''
    ];

Current Output:

Array
(
    [Apple] => apple is a fruit
    [Ball] => ball is used to play
    [Cat] => cat is an animal
    [Eagle] => eagle is a bird
    [Fan] => 
)

Expected Output:

Array
    (
        [Apple] => apple is a fruit
        [Ball] => ball is used to play
        [Cat] => cat is an animal
        [Eagle] => eagle is a bird
    )

I have tried like this

$arr4 = [];
if ($arr3 = array_intersect_key($array1, $array2)) {
    foreach ($arr3 as $k => $v) {
        $arr4[$v] = $array2[$k];
    }
}

print_r($arr4);

Please help, Thanks in advance! If you see the current output, I am getting the result of Fan which has no value. I need to get the results which are having values like the expected output

Answer 1

you can try this

$array3 = [];
foreach ($array1 as $key => $value) {
    if ($array2[$key] != '') {
        $array3[$value] = $array2[$key];
    }
}

echo '<pre>';
print_r($array3);