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

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.

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

Returns the combined array, FALSE if the number of elements for each array isn't equal.

Throws E_WARNING if the number of elements in keys and values does not match.

Version	Description
5.4.0	Previous versions issued `E_WARNING` and returned `FALSE` for empty arrays.

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