1--TEST--
2Test array_diff_key() function : usage variation - Passing float indexed array
3--FILE--
4<?php
5echo "*** Testing array_diff_key() : usage variation ***\n";
6
7// Initialise function arguments not being substituted (if any)
8$input_array = array(0 => '0', 10 => '10', -10 => '-10', 20 =>'20', -20 => '-20');
9$float_indx_array = array(0.0 => '0.0', 10.5 => '10.5', -10.5 => '-10.5', 0.5 => '0.5');
10
11echo "\n-- Testing array_diff_key() function with float indexed array --\n";
12// loop through each element of the array for arr1
13var_dump( array_diff_key($input_array, $float_indx_array) );
14var_dump( array_diff_key($float_indx_array, $input_array) );
15?>
16--EXPECT--
17*** Testing array_diff_key() : usage variation ***
18
19-- Testing array_diff_key() function with float indexed array --
20array(2) {
21  [20]=>
22  string(2) "20"
23  [-20]=>
24  string(3) "-20"
25}
26array(0) {
27}
28