Does PHP Have a zip() Function Equivalent?

PHP Analogue to Python's zip() Function

Python's zip() function conveniently combines multiple iterables into a single collection of tuples. Does PHP offer a similar functionality?

PHP Equivalent

Yes, PHP provides an alternative to zip() through the array_map() function. This function applies the same callback function to elements from multiple arrays and returns an array with the combined results.

How to Use

To utilize array_map() for zipping arrays, follow these steps:

1. Set the first argument of array_map() to null, which indicates that no callback is being used.
2. Pass all the arrays that need to be combined as subsequent arguments.

Example

$a = [1, 2, 3];
$b = ["a", "b", "c"];

$zipped = array_map(null, $a, $b);

// Result:
// [[1, "a"], [2, "b"], [3, "c"]]

Note: Unlike Python's zip(), PHP's array_map() does not truncate the result based on the shortest array. If the arrays have different lengths, the resulting array will be padded with nulls for the shorter arrays.

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