How can a multidimensional array be sorted based on the value in an array?

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There are different ways to sort a multidimensional array based on the value in an array, depending on the programming language and specific requirements. Here is a general approach:

1. Identify the index or key of the array that contains the value to be sorted.
2. Use a sorting algorithm that takes a comparison function as a parameter, such as usort in PHP or sort in JavaScript.
3. Write a comparison function that compares the values to be sorted. This function should take two rows of the multidimensional array as input, extract the relevant value from each, and return the result of the comparison between those values. For example:

function compareRows($a, $b) {
    $key = 0; // index or key of the column to sort by
    if ($a[$key] == $b[$key]) {
        return 0;
    }
    return ($a[$key] < $b[$key]) ? -1 : 1;
}

1. Pass the comparison function as a parameter to the sorting algorithm. For example:

usort($multidimensional_array, 'compareRows');

This will sort the multidimensional array in place based on the value in the specified column. If you want to sort by multiple columns, you can add more comparisons to the function and change the return values accordingly.