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--TEST-- Test array_combine() function : usage variations - associative array with different keys(Bug#43424) --FILE-- <?php /* Prototype : array array_combine(array $keys, array $values) * Description: Creates an array by using the elements of the first parameter as keys * and the elements of the second as the corresponding values * Source code: ext/standard/array.c */ /* * Testing the functionality of array_combine() by passing different * associative arrays having different possible keys to $keys argument and * associative arrays having different possible keys to $values argument. */ echo "*** Testing array_combine() : assoc array with diff keys to both \$keys and \$values argument ***\n"; // get an unset variable $unset_var = 10; unset ($unset_var); // get a resource variable $fp = fopen(__FILE__, "r"); // get a class class classA { public function __toString(){ return "Class A object"; } } // get a heredoc string $heredoc = <<<EOT Hello world EOT; // different variations of associative arrays to be passed to $arr1 argument $arrays = array ( // empty array /*1*/ array(), // arrays with integer keys array(0 => "0"), array(1 => "1"), array(1 => "1", 2 => "2", 3 => "3", 4 => "4"), // arrays with float keys /*5*/ array(2.3333 => "float"), array(1.2 => "f1", 3.33 => "f2", 4.89999922839999 => "f3", 33333333.333333 => "f4"), // arrays with string keys /*7*/ array('\tHello' => 111, 're\td' => "color", '\v\fworld' => 2.2, 'pen\n' => 33), array("\tHello" => 111, "re\td" => "color", "\v\fworld" => 2.2, "pen\n" => 33), array("hello", $heredoc => "string"), // heredoc // array with object, unset variable and resource variable /*10*/ array(new classA() => 11, @$unset_var => "hello", $fp => 'resource'), // array with mixed keys /*11*/ array('hello' => 1, new classA() => 2, "fruit" => 2.2, $fp => 'resource', 133 => "int", 444.432 => "float", @$unset_var => "unset", $heredoc => "heredoc") ); // array to be passsed to $arr2 argument $arr2 = array(0 => 0, 2 => "float", 4 => "f3", 33333333 => "f4", "\tHello" => 111, 2.2, 'color', "Hello world" => "string", "pen\n" => 33, new classA() => 11, 133 => "int"); // loop through each sub-array within $arrays to check the behavior of array_combine() // same arrays are passed to both $keys and $values $iterator = 1; foreach($arrays as $array) { echo "-- Iteration $iterator --\n"; var_dump( array_combine($array, $array) ); $iterator++; } // close the file resource used fclose($fp); echo "Done"; ?> --EXPECTF-- *** Testing array_combine() : assoc array with diff keys to both $keys and $values argument *** Warning: Illegal offset type in %s on line %d Warning: Illegal offset type in %s on line %d Warning: Illegal offset type in %s on line %d Warning: Illegal offset type in %s on line %d Warning: Illegal offset type in %s on line %d -- Iteration 1 -- array(0) { } -- Iteration 2 -- array(1) { [0]=> string(1) "0" } -- Iteration 3 -- array(1) { [1]=> string(1) "1" } -- Iteration 4 -- array(4) { [1]=> string(1) "1" [2]=> string(1) "2" [3]=> string(1) "3" [4]=> string(1) "4" } -- Iteration 5 -- array(1) { ["float"]=> string(5) "float" } -- Iteration 6 -- array(4) { ["f1"]=> string(2) "f1" ["f2"]=> string(2) "f2" ["f3"]=> string(2) "f3" ["f4"]=> string(2) "f4" } -- Iteration 7 -- array(4) { [111]=> int(111) ["color"]=> string(5) "color" ["2.2"]=> float(2.2) [33]=> int(33) } -- Iteration 8 -- array(4) { [111]=> int(111) ["color"]=> string(5) "color" ["2.2"]=> float(2.2) [33]=> int(33) } -- Iteration 9 -- array(2) { ["hello"]=> string(5) "hello" ["string"]=> string(6) "string" } -- Iteration 10 -- array(1) { ["hello"]=> string(5) "hello" } -- Iteration 11 -- array(6) { [1]=> int(1) ["2.2"]=> float(2.2) ["int"]=> string(3) "int" ["float"]=> string(5) "float" ["unset"]=> string(5) "unset" ["heredoc"]=> string(7) "heredoc" } Done