PHP Manual: Creates an array by using one array for keys and another for its values

Description

array array_combine(array $keys, array $values)

Creates an array by using the values from the keys array as keys and the values from the values array as the corresponding values.

Parameters

keys: Array of keys to be used. Illegal values for key will be converted to string.
values: Array of values to be used

Return Values

Returns the combined array.

Errors/Exceptions

As of PHP 8.0.0, a ValueError is thrown if the number of elements in keys and values does not match. Prior to PHP 8.0.0, a E_WARNING was emitted instead.

Changelog

Version	Description
8.0.0	array_combine will now throw a ValueError if the number of elements for each array is not equal; previously this function returned `false` instead.

Examples

Example #1 A simple array_combine example

<?php
$a = array('green', 'red', 'yellow');
$b = array('avocado', 'apple', 'banana');
$c = array_combine($a, $b);

print_r($c);
?>

The above example will output:

Array
(
    [green]  => avocado
    [red]    => apple
    [yellow] => banana
)

array_combine