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php

--TEST--
basic array_combine test
--FILE--
<?php
	$array1 = array('green', 'red', 'yellow');
	$array2 = array('1', '2', '3');
	$array3 = array(0, 1, 2);
	$array4 = array(TRUE, FALSE, NULL);
	$a = array_combine($array1, $array1);
	$b = array_combine($array1, $array2);
	$c = array_combine($array1, $array3);
	$d = array_combine($array1, $array4);
	$e = array_combine($array2, $array1);
	$f = array_combine($array2, $array2);
	$g = array_combine($array2, $array3);
	$h = array_combine($array2, $array4);
	$i = array_combine($array3, $array1);
	$j = array_combine($array3, $array2);
	$k = array_combine($array3, $array3);
	$l = array_combine($array3, $array4);
	$m = array_combine($array4, $array1);
	$n = array_combine($array4, $array2);
	$o = array_combine($array4, $array3);
	$p = array_combine($array4, $array4);
	for($letter = "a"; $letter <= "p"; $letter++)
	{
	 print_r($$letter);
	}
?>
--EXPECT--
Array
(
    [green] => green
    [red] => red
    [yellow] => yellow
)
Array
(
    [green] => 1
    [red] => 2
    [yellow] => 3
)
Array
(
    [green] => 0
    [red] => 1
    [yellow] => 2
)
Array
(
    [green] => 1
    [red] => 
    [yellow] => 
)
Array
(
    [1] => green
    [2] => red
    [3] => yellow
)
Array
(
    [1] => 1
    [2] => 2
    [3] => 3
)
Array
(
    [1] => 0
    [2] => 1
    [3] => 2
)
Array
(
    [1] => 1
    [2] => 
    [3] => 
)
Array
(
    [0] => green
    [1] => red
    [2] => yellow
)
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
)
Array
(
    [0] => 0
    [1] => 1
    [2] => 2
)
Array
(
    [0] => 1
    [1] => 
    [2] => 
)
Array
(
    [1] => green
    [] => yellow
)
Array
(
    [1] => 1
    [] => 3
)
Array
(
    [1] => 0
    [] => 2
)
Array
(
    [1] => 1
    [] => 
)