Mastering PHP’s array_combine: Create Key-Value Arrays Instantly

Function Overview

array_combine() creates an array using one array for keys and another for values, returning the combined associative array.

Parameters

keys : an array whose values become the new array's keys; illegal values are cast to strings.

values : an array whose values become the new array's values.

Return Value

Returns the merged array; if the two input arrays contain a different number of elements, the function returns FALSE.

Warning

If the number of elements in the keys and values arrays differ, PHP emits an E_WARNING warning.

Example

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

Output

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