How to Replicate Python\'s zip() Function in PHP?

PHP Equivalent of Python's zip() Function

Python's zip() function provides a simple and concise way to combine multiple lists or sequences into an iterable of tuples. The tuples contain elements at the corresponding index from each input sequence. In PHP, there is no built-in zip() function. However, you can achieve similar functionality using array_map().

Solution Using Array Map:

As long as all input arrays have the same length, you can use array_map() with null as the first argument. The null argument ignores the callback function parameter and passes all input arrays as arguments to map():

array_map(null, $a, $b, $c, ...);

This will return an array of tuples, where each tuple contains elements at the corresponding index from each input array. For example, given the following input arrays:

$a = [1, 2, 3, 4];
$b = ['a', 'b', 'c', 'd'];
$c = ['x', 'y', 'z', 'w'];

Calling array_map() as shown below will produce the following result:

array_map(null, $a, $b, $c);
    [1, 'a', 'x']
    [2, 'b', 'y']
    [3, 'c', 'z']
    [4, 'd', 'w']

Note: If some input arrays have different lengths, they will be padded with null values to the length of the longest array. This differs from Python's zip(), which returns an iterable with the length of the shortest array.

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