How can one determine the number of elements in a specific level of a multidimensional array in PHP?

To determine the number of elements in a specific level of a multidimensional array in PHP, you can use the count() function along with array_column() to extract the specific level of the array. This will allow you to count the number of elements in that level without having to iterate through the entire array. 

// Example multidimensional array
$multiArray = [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9]
];

// Determine the number of elements in the second level of the array
$specificLevel = array_column($multiArray, 1); // Change '1' to the desired level
$numberOfElements = count($specificLevel);

echo $numberOfElements; // Output: 3

Keywords

PHP multidimensional array count sizeof level

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