How can one determine the key of the current position in a multidimensional associative array in PHP?

To determine the key of the current position in a multidimensional associative array in PHP, you can use the key() function to retrieve the key of the current element that is being pointed to by the internal array pointer. This function can be used in conjunction with each() to iterate through the array and obtain the key of the current element. 

$array = [
    'first' => [
        'a' => 1,
        'b' => 2,
    ],
    'second' => [
        'c' => 3,
        'd' => 4,
    ],
];

foreach ($array as $key => $value) {
    echo "Current key: " . key($value) . "\n";
}

Keywords

PHP multidimensional array associative array key current position

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