jmessa          Tue Feb 12 17:45:48 2008 UTC

  Modified files:              
    /php-src/ext/standard/tests/array   
                                        array_change_key_case_variation4.phpt 
                                        array_change_key_case_variation7.phpt 
                                        array_change_key_case_variation8.phpt 
                                        array_change_key_case_variation3.phpt 
                                        array_change_key_case_variation1.phpt 
                                        array_change_key_case_variation2.phpt 
                                        array_change_key_case_variation5.phpt 
                                        array_change_key_case_variation6.phpt 
  Log:
  - committing array_change_key_case variation tests
  
http://cvs.php.net/viewvc.cgi/php-src/ext/standard/tests/array/array_change_key_case_variation4.phpt?r1=1.1&r2=1.2&diff_format=u
Index: php-src/ext/standard/tests/array/array_change_key_case_variation4.phpt
diff -u /dev/null 
php-src/ext/standard/tests/array/array_change_key_case_variation4.phpt:1.2
--- /dev/null   Tue Feb 12 17:45:48 2008
+++ php-src/ext/standard/tests/array/array_change_key_case_variation4.phpt      
Tue Feb 12 17:45:47 2008
@@ -0,0 +1,251 @@
+--TEST--
+Test array_change_key_case() function : usage variations - different int 
values for $case
+--FILE--
+<?php
+/* Prototype  : array array_change_key_case(array $input [, int $case])
+ * Description: Retuns an array with all string keys lowercased [or 
uppercased] 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass different integer values as $case argument to array_change_key_case() 
to test behaviour
+ */
+
+echo "*** Testing array_change_key_case() : usage variations ***\n";
+
+$input = array('One' => 'un', 'TWO' => 'deux', 'three' => 'trois');
+for ($i = -5; $i <=5; $i += 1){
+       echo "\n-- \$sort argument is $i --\n";
+       $temp = $input;
+       var_dump(array_change_key_case($temp, $i));
+}
+
+echo "Done";
+?>
+
+--EXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- $sort argument is -5 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is -4 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is -3 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is -2 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is -1 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is 0 --
+array(3) {
+  ["one"]=>
+  string(2) "un"
+  ["two"]=>
+  string(4) "deux"
+  ["three"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is 1 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is 2 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is 3 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is 4 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+
+-- $sort argument is 5 --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+Done
+--UEXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- $sort argument is -5 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is -4 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is -3 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is -2 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is -1 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is 0 --
+array(3) {
+  [u"one"]=>
+  unicode(2) "un"
+  [u"two"]=>
+  unicode(4) "deux"
+  [u"three"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is 1 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is 2 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is 3 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is 4 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+
+-- $sort argument is 5 --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+Done
\ No newline at end of file
http://cvs.php.net/viewvc.cgi/php-src/ext/standard/tests/array/array_change_key_case_variation7.phpt?r1=1.1&r2=1.2&diff_format=u
Index: php-src/ext/standard/tests/array/array_change_key_case_variation7.phpt
diff -u /dev/null 
php-src/ext/standard/tests/array/array_change_key_case_variation7.phpt:1.2
--- /dev/null   Tue Feb 12 17:45:48 2008
+++ php-src/ext/standard/tests/array/array_change_key_case_variation7.phpt      
Tue Feb 12 17:45:47 2008
@@ -0,0 +1,143 @@
+--TEST--
+Test array_change_key_case() function : usage variations - referenced variables
+--FILE--
+<?php
+/* Prototype  : array array_change_key_case(array $input [, int $case])
+ * Description: Retuns an array with all string keys lowercased [or 
uppercased] 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test array_change_key_case() when:
+ * 1. Passed a referenced variable
+ * 2. Passed an argument by reference
+ */
+
+echo "*** Testing array_change_key_case() : usage variations ***\n";
+
+$input = array('one' => 1, 'two' => 2, 'ABC' => 'xyz');
+
+echo "\n-- \$input argument is a reference to array --\n";
+$new_input = &$input;
+echo "Result:\n";
+var_dump(array_change_key_case($new_input, CASE_UPPER));
+echo "Original:\n";
+var_dump($input);
+echo "Referenced:\n";
+var_dump($new_input);
+
+echo "\n-- \$input is an array passed by reference --\n";
+echo "Result:\n";
+var_dump(array_change_key_case(&$input, CASE_UPPER));
+echo "Original:\n";
+var_dump($input);
+
+echo "Done";
+?>
+
+--EXPECTF--
+Strict Standards: Call-time pass-by-reference has been deprecated in %s on 
line %d
+*** Testing array_change_key_case() : usage variations ***
+
+-- $input argument is a reference to array --
+Result:
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["ABC"]=>
+  string(3) "xyz"
+}
+Original:
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["ABC"]=>
+  string(3) "xyz"
+}
+Referenced:
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["ABC"]=>
+  string(3) "xyz"
+}
+
+-- $input is an array passed by reference --
+Result:
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["ABC"]=>
+  string(3) "xyz"
+}
+Original:
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["ABC"]=>
+  string(3) "xyz"
+}
+Done
+--UEXPECTF--
+Strict Standards: Call-time pass-by-reference has been deprecated in %s on 
line %d
+*** Testing array_change_key_case() : usage variations ***
+
+-- $input argument is a reference to array --
+Result:
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"ABC"]=>
+  unicode(3) "xyz"
+}
+Original:
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"ABC"]=>
+  unicode(3) "xyz"
+}
+Referenced:
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"ABC"]=>
+  unicode(3) "xyz"
+}
+
+-- $input is an array passed by reference --
+Result:
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"ABC"]=>
+  unicode(3) "xyz"
+}
+Original:
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"ABC"]=>
+  unicode(3) "xyz"
+}
+Done
\ No newline at end of file
http://cvs.php.net/viewvc.cgi/php-src/ext/standard/tests/array/array_change_key_case_variation8.phpt?r1=1.1&r2=1.2&diff_format=u
Index: php-src/ext/standard/tests/array/array_change_key_case_variation8.phpt
diff -u /dev/null 
php-src/ext/standard/tests/array/array_change_key_case_variation8.phpt:1.2
--- /dev/null   Tue Feb 12 17:45:48 2008
+++ php-src/ext/standard/tests/array/array_change_key_case_variation8.phpt      
Tue Feb 12 17:45:47 2008
@@ -0,0 +1,223 @@
+--TEST--
+Test array_change_key_case() function : usage variations - Different strings 
as keys
+--FILE--
+<?php
+/* Prototype  : array array_change_key_case(array $input [, int $case])
+ * Description: Retuns an array with all string keys lowercased [or 
uppercased] 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test how array_change_key_case() behaves with different strings
+ */
+
+echo "*** Testing array_change_key_case() : usage variations ***\n";
+
+$inputs = array (
+       // group of escape sequences
+       array(null => 1, NULL => 2, "\a" => 3, "\cx" => 4, "\e" => 5, "\f" => 
6, "\n" => 7, "\t" => 8, "\xhh" => 9, "\ddd" => 10, "\v" => 11),
+
+       // array contains combination of capital/small letters
+       array("lemoN" => 1, "Orange" => 2, "banana" => 3, "apple" => 4, "Test" 
=> 5, "TTTT" => 6, "ttt" => 7, "ww" => 8, "x" => 9, "X" => 10, "oraNGe" => 11, 
"BANANA" => 12)
+);
+
+foreach($inputs as $input) {
+       echo "\n-- \$case = default --\n";
+       var_dump(array_change_key_case($input));
+       echo "-- \$case = upper --\n";
+       var_dump(array_change_key_case($input, CASE_UPPER));
+}
+
+echo "Done";
+?>
+
+--EXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- $case = default --
+array(10) {
+  [""]=>
+  int(2)
+  ["\a"]=>
+  int(3)
+  ["\cx"]=>
+  int(4)
+  ["\e"]=>
+  int(5)
+  [""]=>
+  int(6)
+  ["
+"]=>
+  int(7)
+  ["   "]=>
+  int(8)
+  ["\xhh"]=>
+  int(9)
+  ["\ddd"]=>
+  int(10)
+  [""]=>
+  int(11)
+}
+-- $case = upper --
+array(10) {
+  [""]=>
+  int(2)
+  ["\A"]=>
+  int(3)
+  ["\CX"]=>
+  int(4)
+  ["\E"]=>
+  int(5)
+  [""]=>
+  int(6)
+  ["
+"]=>
+  int(7)
+  ["   "]=>
+  int(8)
+  ["\XHH"]=>
+  int(9)
+  ["\DDD"]=>
+  int(10)
+  [""]=>
+  int(11)
+}
+
+-- $case = default --
+array(9) {
+  ["lemon"]=>
+  int(1)
+  ["orange"]=>
+  int(11)
+  ["banana"]=>
+  int(12)
+  ["apple"]=>
+  int(4)
+  ["test"]=>
+  int(5)
+  ["tttt"]=>
+  int(6)
+  ["ttt"]=>
+  int(7)
+  ["ww"]=>
+  int(8)
+  ["x"]=>
+  int(10)
+}
+-- $case = upper --
+array(9) {
+  ["LEMON"]=>
+  int(1)
+  ["ORANGE"]=>
+  int(11)
+  ["BANANA"]=>
+  int(12)
+  ["APPLE"]=>
+  int(4)
+  ["TEST"]=>
+  int(5)
+  ["TTTT"]=>
+  int(6)
+  ["TTT"]=>
+  int(7)
+  ["WW"]=>
+  int(8)
+  ["X"]=>
+  int(10)
+}
+Done
+--UEXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- $case = default --
+array(10) {
+  [u""]=>
+  int(2)
+  [u"\a"]=>
+  int(3)
+  [u"\cx"]=>
+  int(4)
+  [u"\e"]=>
+  int(5)
+  [u""]=>
+  int(6)
+  [u"
+"]=>
+  int(7)
+  [u"  "]=>
+  int(8)
+  [u"\xhh"]=>
+  int(9)
+  [u"\ddd"]=>
+  int(10)
+  [u""]=>
+  int(11)
+}
+-- $case = upper --
+array(10) {
+  [u""]=>
+  int(2)
+  [u"\A"]=>
+  int(3)
+  [u"\CX"]=>
+  int(4)
+  [u"\E"]=>
+  int(5)
+  [u""]=>
+  int(6)
+  [u"
+"]=>
+  int(7)
+  [u"  "]=>
+  int(8)
+  [u"\XHH"]=>
+  int(9)
+  [u"\DDD"]=>
+  int(10)
+  [u""]=>
+  int(11)
+}
+
+-- $case = default --
+array(9) {
+  [u"lemon"]=>
+  int(1)
+  [u"orange"]=>
+  int(11)
+  [u"banana"]=>
+  int(12)
+  [u"apple"]=>
+  int(4)
+  [u"test"]=>
+  int(5)
+  [u"tttt"]=>
+  int(6)
+  [u"ttt"]=>
+  int(7)
+  [u"ww"]=>
+  int(8)
+  [u"x"]=>
+  int(10)
+}
+-- $case = upper --
+array(9) {
+  [u"LEMON"]=>
+  int(1)
+  [u"ORANGE"]=>
+  int(11)
+  [u"BANANA"]=>
+  int(12)
+  [u"APPLE"]=>
+  int(4)
+  [u"TEST"]=>
+  int(5)
+  [u"TTTT"]=>
+  int(6)
+  [u"TTT"]=>
+  int(7)
+  [u"WW"]=>
+  int(8)
+  [u"X"]=>
+  int(10)
+}
+Done
\ No newline at end of file
http://cvs.php.net/viewvc.cgi/php-src/ext/standard/tests/array/array_change_key_case_variation3.phpt?r1=1.1&r2=1.2&diff_format=u
Index: php-src/ext/standard/tests/array/array_change_key_case_variation3.phpt
diff -u /dev/null 
php-src/ext/standard/tests/array/array_change_key_case_variation3.phpt:1.2
--- /dev/null   Tue Feb 12 17:45:48 2008
+++ php-src/ext/standard/tests/array/array_change_key_case_variation3.phpt      
Tue Feb 12 17:45:47 2008
@@ -0,0 +1,292 @@
+--TEST--
+Test array_change_key_case() function : usage variations - different data 
types as keys
+--FILE--
+<?php
+/* Prototype  : array array_change_key_case(array $input [, int $case])
+ * Description: Retuns an array with all string keys lowercased [or 
uppercased] 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass arrays with different data types as keys to array_change_key_case()
+ * to test conversion
+ */
+
+echo "*** Testing array_change_key_case() : usage variations ***\n";
+
+//get an unset variable
+$unset_var = 10;
+unset ($unset_var);
+
+// heredoc string
+$heredoc = <<<EOT
+hello world
+EOT;
+
+// arrays of different data types to be passed to $input argument
+$inputs = array(
+
+       // int data
+/*1*/  'int' => array(
+       0 => 'zero',
+       1 => 'one',
+       12345 => 'positive',
+       -2345 => 'negative',
+       ),
+
+       // float data
+/*2*/  'float' => array(
+       10.5 => 'positive',
+       -10.5 => 'negative',
+       .5 => 'half',
+       ),
+       
+       'extreme floats' => array(
+       12.3456789000e6 => 'large',
+       12.3456789000E-10 => 'small',
+       ),
+
+       // null data
+/*3*/ 'null uppercase' => array(
+       NULL => 'null 1',
+       ), 
+       'null lowercase' => array(
+       null => 'null 2',
+       ),
+
+       // boolean data
+/*4*/ 'bool lowercase' => array(
+       true => 'lowert',
+       false => 'lowerf',
+       ),
+       'bool uppercase' => array(
+       TRUE => 'uppert',
+       FALSE => 'upperf',
+       ),
+       
+       // empty data
+/*5*/ 'empty double quotes' => array(
+       "" => 'emptyd',
+       ),
+       'empty single quotes' => array(
+       '' => 'emptys',
+       ),
+
+       // string data
+/*6*/ 'string' => array(
+       "stringd" => 'stringd',
+       'strings' => 'strings',
+       $heredoc => 'stringh',
+       ),
+
+       // undefined data
+/*8*/ 'undefined' => array(
+       @$undefined_var => 'undefined',
+       ),
+
+       // unset data
+/*9*/ 'unset' => array(
+       @$unset_var => 'unset',
+       ),
+);
+
+// loop through each sub-array of $inputs to check the behavior of 
array_change_key_case()
+$iterator = 1;
+foreach($inputs as $key => $input) {
+  echo "\n-- Iteration $iterator : $key data --\n";
+  var_dump( array_change_key_case($input, CASE_UPPER) );
+  $iterator++;
+};
+
+echo "Done";
+?>
+--EXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Iteration 1 : int data --
+array(4) {
+  [0]=>
+  string(4) "zero"
+  [1]=>
+  string(3) "one"
+  [12345]=>
+  string(8) "positive"
+  [-2345]=>
+  string(8) "negative"
+}
+
+-- Iteration 2 : float data --
+array(3) {
+  [10]=>
+  string(8) "positive"
+  [-10]=>
+  string(8) "negative"
+  [0]=>
+  string(4) "half"
+}
+
+-- Iteration 3 : extreme floats data --
+array(2) {
+  [12345678]=>
+  string(5) "large"
+  [0]=>
+  string(5) "small"
+}
+
+-- Iteration 4 : null uppercase data --
+array(1) {
+  [""]=>
+  string(6) "null 1"
+}
+
+-- Iteration 5 : null lowercase data --
+array(1) {
+  [""]=>
+  string(6) "null 2"
+}
+
+-- Iteration 6 : bool lowercase data --
+array(2) {
+  [1]=>
+  string(6) "lowert"
+  [0]=>
+  string(6) "lowerf"
+}
+
+-- Iteration 7 : bool uppercase data --
+array(2) {
+  [1]=>
+  string(6) "uppert"
+  [0]=>
+  string(6) "upperf"
+}
+
+-- Iteration 8 : empty double quotes data --
+array(1) {
+  [""]=>
+  string(6) "emptyd"
+}
+
+-- Iteration 9 : empty single quotes data --
+array(1) {
+  [""]=>
+  string(6) "emptys"
+}
+
+-- Iteration 10 : string data --
+array(3) {
+  ["STRINGD"]=>
+  string(7) "stringd"
+  ["STRINGS"]=>
+  string(7) "strings"
+  ["HELLO WORLD"]=>
+  string(7) "stringh"
+}
+
+-- Iteration 11 : undefined data --
+array(1) {
+  [""]=>
+  string(9) "undefined"
+}
+
+-- Iteration 12 : unset data --
+array(1) {
+  [""]=>
+  string(5) "unset"
+}
+Done
+--UEXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Iteration 1 : int data --
+array(4) {
+  [0]=>
+  unicode(4) "zero"
+  [1]=>
+  unicode(3) "one"
+  [12345]=>
+  unicode(8) "positive"
+  [-2345]=>
+  unicode(8) "negative"
+}
+
+-- Iteration 2 : float data --
+array(3) {
+  [10]=>
+  unicode(8) "positive"
+  [-10]=>
+  unicode(8) "negative"
+  [0]=>
+  unicode(4) "half"
+}
+
+-- Iteration 3 : extreme floats data --
+array(2) {
+  [12345678]=>
+  unicode(5) "large"
+  [0]=>
+  unicode(5) "small"
+}
+
+-- Iteration 4 : null uppercase data --
+array(1) {
+  [u""]=>
+  unicode(6) "null 1"
+}
+
+-- Iteration 5 : null lowercase data --
+array(1) {
+  [u""]=>
+  unicode(6) "null 2"
+}
+
+-- Iteration 6 : bool lowercase data --
+array(2) {
+  [1]=>
+  unicode(6) "lowert"
+  [0]=>
+  unicode(6) "lowerf"
+}
+
+-- Iteration 7 : bool uppercase data --
+array(2) {
+  [1]=>
+  unicode(6) "uppert"
+  [0]=>
+  unicode(6) "upperf"
+}
+
+-- Iteration 8 : empty double quotes data --
+array(1) {
+  [u""]=>
+  unicode(6) "emptyd"
+}
+
+-- Iteration 9 : empty single quotes data --
+array(1) {
+  [u""]=>
+  unicode(6) "emptys"
+}
+
+-- Iteration 10 : string data --
+array(3) {
+  [u"STRINGD"]=>
+  unicode(7) "stringd"
+  [u"STRINGS"]=>
+  unicode(7) "strings"
+  [u"HELLO WORLD"]=>
+  unicode(7) "stringh"
+}
+
+-- Iteration 11 : undefined data --
+array(1) {
+  [u""]=>
+  unicode(9) "undefined"
+}
+
+-- Iteration 12 : unset data --
+array(1) {
+  [u""]=>
+  unicode(5) "unset"
+}
+Done
\ No newline at end of file
http://cvs.php.net/viewvc.cgi/php-src/ext/standard/tests/array/array_change_key_case_variation1.phpt?r1=1.1&r2=1.2&diff_format=u
Index: php-src/ext/standard/tests/array/array_change_key_case_variation1.phpt
diff -u /dev/null 
php-src/ext/standard/tests/array/array_change_key_case_variation1.phpt:1.2
--- /dev/null   Tue Feb 12 17:45:48 2008
+++ php-src/ext/standard/tests/array/array_change_key_case_variation1.phpt      
Tue Feb 12 17:45:47 2008
@@ -0,0 +1,351 @@
+--TEST--
+Test array_change_key_case() function : usage variations - Pass different data 
types as $input arg
+--FILE--
+<?php
+/* Prototype  : array array_change_key_case(array $input [, int $case])
+ * Description: Retuns an array with all string keys lowercased [or 
uppercased] 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass different data types as $input argument to test behaviour of 
array_change_key_case()
+ */
+
+echo "*** Testing array_change_key_case() : usage variations ***\n";
+
+//get an unset variable
+$unset_var = 10;
+unset ($unset_var);
+
+// get a class
+class classA
+{
+  public function __toString() {
+    return "Class A object";
+  }
+}
+
+// heredoc string
+$heredoc = <<<EOT
+hello world
+EOT;
+
+// get a resource variable
+$fp = fopen(__FILE__, "r");
+
+// unexpected values to be passed to $input argument
+$inputs = array(
+
+       // int data
+/*1*/  0,
+       1,
+       12345,
+       -2345,
+
+       // float data
+/*5*/  10.5,
+       -10.5,
+       12.3456789000e10,
+       12.3456789000E-10,
+       .5,
+
+       // null data
+/*10*/ NULL,
+       null,
+
+       // boolean data
+/*12*/ true,
+       false,
+       TRUE,
+       FALSE,
+       
+       // empty data
+/*16*/ "",
+       '',
+       array(),
+
+       // string data
+/*19*/ "string",
+       'string',
+       $heredoc,
+       
+       // object data
+/*22*/ new classA(),
+
+       // undefined data
+/*23*/ @$undefined_var,
+
+       // unset data
+/*24*/ @$unset_var,
+
+       // resource variable
+/*25*/ $fp
+);
+
+// loop through each element of $inputs to check the behavior of 
array_change_key_case()
+$iterator = 1;
+foreach($inputs as $input) {
+  echo "\n-- Iteration $iterator --\n";
+  var_dump( array_change_key_case($input) );
+  $iterator++;
+};
+
+fclose($fp);
+
+echo "Done";
+?>
+
+--EXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Iteration 1 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, integer 
given in %s on line %d
+NULL
+
+-- Iteration 2 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, integer 
given in %s on line %d
+NULL
+
+-- Iteration 3 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, integer 
given in %s on line %d
+NULL
+
+-- Iteration 4 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, integer 
given in %s on line %d
+NULL
+
+-- Iteration 5 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 6 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 7 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 8 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 9 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 10 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, null given 
in %s on line %d
+NULL
+
+-- Iteration 11 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, null given 
in %s on line %d
+NULL
+
+-- Iteration 12 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, boolean 
given in %s on line %d
+NULL
+
+-- Iteration 13 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, boolean 
given in %s on line %d
+NULL
+
+-- Iteration 14 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, boolean 
given in %s on line %d
+NULL
+
+-- Iteration 15 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, boolean 
given in %s on line %d
+NULL
+
+-- Iteration 16 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, string given 
in %s on line %d
+NULL
+
+-- Iteration 17 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, string given 
in %s on line %d
+NULL
+
+-- Iteration 18 --
+array(0) {
+}
+
+-- Iteration 19 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, string given 
in %s on line %d
+NULL
+
+-- Iteration 20 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, string given 
in %s on line %d
+NULL
+
+-- Iteration 21 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, string given 
in %s on line %d
+NULL
+
+-- Iteration 22 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, object given 
in %s on line %d
+NULL
+
+-- Iteration 23 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, null given 
in %s on line %d
+NULL
+
+-- Iteration 24 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, null given 
in %s on line %d
+NULL
+
+-- Iteration 25 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, resource 
given in %s on line %d
+NULL
+Done
+--UEXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Iteration 1 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, integer 
given in %s on line %d
+NULL
+
+-- Iteration 2 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, integer 
given in %s on line %d
+NULL
+
+-- Iteration 3 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, integer 
given in %s on line %d
+NULL
+
+-- Iteration 4 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, integer 
given in %s on line %d
+NULL
+
+-- Iteration 5 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 6 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 7 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 8 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 9 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, double given 
in %s on line %d
+NULL
+
+-- Iteration 10 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, null given 
in %s on line %d
+NULL
+
+-- Iteration 11 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, null given 
in %s on line %d
+NULL
+
+-- Iteration 12 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, boolean 
given in %s on line %d
+NULL
+
+-- Iteration 13 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, boolean 
given in %s on line %d
+NULL
+
+-- Iteration 14 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, boolean 
given in %s on line %d
+NULL
+
+-- Iteration 15 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, boolean 
given in %s on line %d
+NULL
+
+-- Iteration 16 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 17 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 18 --
+array(0) {
+}
+
+-- Iteration 19 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 20 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 21 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 22 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, object given 
in %s on line %d
+NULL
+
+-- Iteration 23 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, null given 
in %s on line %d
+NULL
+
+-- Iteration 24 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, null given 
in %s on line %d
+NULL
+
+-- Iteration 25 --
+
+Warning: array_change_key_case() expects parameter 1 to be array, resource 
given in %s on line %d
+NULL
+Done
\ No newline at end of file
http://cvs.php.net/viewvc.cgi/php-src/ext/standard/tests/array/array_change_key_case_variation2.phpt?r1=1.1&r2=1.2&diff_format=u
Index: php-src/ext/standard/tests/array/array_change_key_case_variation2.phpt
diff -u /dev/null 
php-src/ext/standard/tests/array/array_change_key_case_variation2.phpt:1.2
--- /dev/null   Tue Feb 12 17:45:48 2008
+++ php-src/ext/standard/tests/array/array_change_key_case_variation2.phpt      
Tue Feb 12 17:45:47 2008
@@ -0,0 +1,491 @@
+--TEST--
+Test array_change_key_case() function : usage variations - Pass different data 
types as $case arg
+--FILE--
+<?php
+/* Prototype  : array array_change_key_case(array $input [, int $case])
+ * Description: Retuns an array with all string keys lowercased [or 
uppercased] 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass different data types as $case argument to array_change_key_case() to 
test behaviour
+ * Where possible, CASE_UPPER has been entered as a string value
+ */
+
+echo "*** Testing array_change_key_case() : usage variations ***\n";
+
+// Initialise function arguments not being substituted
+$array = array ('one' => 1, 'TWO' => 2, 'Three' => 3);
+
+//get an unset variable
+$unset_var = 10;
+unset ($unset_var);
+
+// heredoc string
+$heredoc = <<<EOT
+CASE_UPPER
+EOT;
+
+// get a resource variable
+$fp = fopen(__FILE__, "r");
+
+// unexpected values to be passed to $case argument
+$inputs = array(
+
+       // int data
+/*1*/  0,
+       1,
+       12345,
+       -2345,
+
+       // float data
+/*5*/  10.5,
+       -10.5,
+       12.3456789000e10,
+       12.3456789000E-10,
+       .5,
+
+       // null data
+/*10*/ NULL,
+       null,
+
+       // boolean data
+/*12*/ true,
+       false,
+       TRUE,
+       FALSE,
+       
+       // empty data
+/*16*/ "",
+       '',
+       array(),
+
+       // string data
+/*19*/ "CASE_UPPER",
+       'CASE_UPPER',
+       $heredoc,
+
+       // undefined data
+/*22*/ @$undefined_var,
+
+       // unset data
+/*23*/ @$unset_var,
+);
+
+// loop through each element of $inputs to check the behavior of 
array_change_key_case()
+$iterator = 1;
+foreach($inputs as $input) {
+  echo "\n-- Iteration $iterator --\n";
+  var_dump( array_change_key_case($array, $input) );
+  $iterator++;
+};
+
+echo "Done";
+?>
+
+--EXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Iteration 1 --
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["three"]=>
+  int(3)
+}
+
+-- Iteration 2 --
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["THREE"]=>
+  int(3)
+}
+
+-- Iteration 3 --
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["THREE"]=>
+  int(3)
+}
+
+-- Iteration 4 --
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["THREE"]=>
+  int(3)
+}
+
+-- Iteration 5 --
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["THREE"]=>
+  int(3)
+}
+
+-- Iteration 6 --
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["THREE"]=>
+  int(3)
+}
+
+-- Iteration 7 --
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["THREE"]=>
+  int(3)
+}
+
+-- Iteration 8 --
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["three"]=>
+  int(3)
+}
+
+-- Iteration 9 --
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["three"]=>
+  int(3)
+}
+
+-- Iteration 10 --
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["three"]=>
+  int(3)
+}
+
+-- Iteration 11 --
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["three"]=>
+  int(3)
+}
+
+-- Iteration 12 --
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["THREE"]=>
+  int(3)
+}
+
+-- Iteration 13 --
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["three"]=>
+  int(3)
+}
+
+-- Iteration 14 --
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["THREE"]=>
+  int(3)
+}
+
+-- Iteration 15 --
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["three"]=>
+  int(3)
+}
+
+-- Iteration 16 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, string given 
in %s on line %d
+NULL
+
+-- Iteration 17 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, string given 
in %s on line %d
+NULL
+
+-- Iteration 18 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, array given 
in %s on line %d
+NULL
+
+-- Iteration 19 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, string given 
in %s on line %d
+NULL
+
+-- Iteration 20 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, string given 
in %s on line %d
+NULL
+
+-- Iteration 21 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, string given 
in %s on line %d
+NULL
+
+-- Iteration 22 --
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["three"]=>
+  int(3)
+}
+
+-- Iteration 23 --
+array(3) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+  ["three"]=>
+  int(3)
+}
+Done
+--UEXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Iteration 1 --
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"three"]=>
+  int(3)
+}
+
+-- Iteration 2 --
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"THREE"]=>
+  int(3)
+}
+
+-- Iteration 3 --
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"THREE"]=>
+  int(3)
+}
+
+-- Iteration 4 --
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"THREE"]=>
+  int(3)
+}
+
+-- Iteration 5 --
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"THREE"]=>
+  int(3)
+}
+
+-- Iteration 6 --
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"THREE"]=>
+  int(3)
+}
+
+-- Iteration 7 --
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"THREE"]=>
+  int(3)
+}
+
+-- Iteration 8 --
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"three"]=>
+  int(3)
+}
+
+-- Iteration 9 --
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"three"]=>
+  int(3)
+}
+
+-- Iteration 10 --
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"three"]=>
+  int(3)
+}
+
+-- Iteration 11 --
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"three"]=>
+  int(3)
+}
+
+-- Iteration 12 --
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"THREE"]=>
+  int(3)
+}
+
+-- Iteration 13 --
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"three"]=>
+  int(3)
+}
+
+-- Iteration 14 --
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"THREE"]=>
+  int(3)
+}
+
+-- Iteration 15 --
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"three"]=>
+  int(3)
+}
+
+-- Iteration 16 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 17 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 18 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, array given 
in %s on line %d
+NULL
+
+-- Iteration 19 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 20 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 21 --
+
+Warning: array_change_key_case() expects parameter 2 to be long, Unicode 
string given in %s on line %d
+NULL
+
+-- Iteration 22 --
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"three"]=>
+  int(3)
+}
+
+-- Iteration 23 --
+array(3) {
+  [u"one"]=>
+  int(1)
+  [u"two"]=>
+  int(2)
+  [u"three"]=>
+  int(3)
+}
+Done
\ No newline at end of file
http://cvs.php.net/viewvc.cgi/php-src/ext/standard/tests/array/array_change_key_case_variation5.phpt?r1=1.1&r2=1.2&diff_format=u
Index: php-src/ext/standard/tests/array/array_change_key_case_variation5.phpt
diff -u /dev/null 
php-src/ext/standard/tests/array/array_change_key_case_variation5.phpt:1.2
--- /dev/null   Tue Feb 12 17:45:48 2008
+++ php-src/ext/standard/tests/array/array_change_key_case_variation5.phpt      
Tue Feb 12 17:45:47 2008
@@ -0,0 +1,64 @@
+--TEST--
+Test array_change_key_case() function : usage variations - position of 
internal pointer
+--FILE--
+<?php
+/* Prototype  : array array_change_key_case(array $input [, int $case])
+ * Description: Retuns an array with all string keys lowercased [or 
uppercased] 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Check the position of the internal array pointer after calling the function
+ */
+
+echo "*** Testing array_change_key_case() : usage variations ***\n";
+
+$input = array ('one' => 'un', 'two' => 'deux', 'three' => 'trois');
+
+echo "\n-- Call array_change_key_case() --\n";
+var_dump($result = array_change_key_case($input, CASE_UPPER));
+
+echo "-- Position of Internal Pointer in Result: --\n";
+echo key($result) . " => " . current($result) . "\n";
+echo "\n-- Position of Internal Pointer in Original Array: --\n";
+echo key($input) . " => " . current ($input) . "\n";
+
+echo "Done";
+?>
+
+--EXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Call array_change_key_case() --
+array(3) {
+  ["ONE"]=>
+  string(2) "un"
+  ["TWO"]=>
+  string(4) "deux"
+  ["THREE"]=>
+  string(5) "trois"
+}
+-- Position of Internal Pointer in Result: --
+ONE => un
+
+-- Position of Internal Pointer in Original Array: --
+one => un
+Done
+--UEXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Call array_change_key_case() --
+array(3) {
+  [u"ONE"]=>
+  unicode(2) "un"
+  [u"TWO"]=>
+  unicode(4) "deux"
+  [u"THREE"]=>
+  unicode(5) "trois"
+}
+-- Position of Internal Pointer in Result: --
+ONE => un
+
+-- Position of Internal Pointer in Original Array: --
+one => un
+Done
\ No newline at end of file
http://cvs.php.net/viewvc.cgi/php-src/ext/standard/tests/array/array_change_key_case_variation6.phpt?r1=1.1&r2=1.2&diff_format=u
Index: php-src/ext/standard/tests/array/array_change_key_case_variation6.phpt
diff -u /dev/null 
php-src/ext/standard/tests/array/array_change_key_case_variation6.phpt:1.2
--- /dev/null   Tue Feb 12 17:45:48 2008
+++ php-src/ext/standard/tests/array/array_change_key_case_variation6.phpt      
Tue Feb 12 17:45:47 2008
@@ -0,0 +1,116 @@
+--TEST--
+Test array_change_key_case() function : usage variations - multidimensional 
arrays
+--FILE--
+<?php
+/* Prototype  : array array_change_key_case(array $input [, int $case])
+ * Description: Retuns an array with all string keys lowercased [or 
uppercased] 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test how array_change_key_case() converts keys in multi-dimensional arrays
+ */
+
+echo "*** Testing array_change_key_case() : usage variations ***\n";
+
+$input = array('English' => array('one' => 1, 'two' => 2, 'three' => 3),
+               'French'  => array('un' => 1, 'deux' => 2, 'trois' => 3),
+               'German'  => array('eins' => 1, 'zwei' => 2, 'drei' => 3));
+
+echo "\n-- Pass a two-dimensional array as \$input argument --\n";
+var_dump(array_change_key_case($input, CASE_UPPER));
+
+echo "\n-- Pass a sub-arry as \$input argument --\n";
+var_dump(array_change_key_case($input['English'], CASE_UPPER));
+
+echo "Done";
+?>
+
+--EXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Pass a two-dimensional array as $input argument --
+array(3) {
+  ["ENGLISH"]=>
+  array(3) {
+    ["one"]=>
+    int(1)
+    ["two"]=>
+    int(2)
+    ["three"]=>
+    int(3)
+  }
+  ["FRENCH"]=>
+  array(3) {
+    ["un"]=>
+    int(1)
+    ["deux"]=>
+    int(2)
+    ["trois"]=>
+    int(3)
+  }
+  ["GERMAN"]=>
+  array(3) {
+    ["eins"]=>
+    int(1)
+    ["zwei"]=>
+    int(2)
+    ["drei"]=>
+    int(3)
+  }
+}
+
+-- Pass a sub-arry as $input argument --
+array(3) {
+  ["ONE"]=>
+  int(1)
+  ["TWO"]=>
+  int(2)
+  ["THREE"]=>
+  int(3)
+}
+Done
+--UEXPECTF--
+*** Testing array_change_key_case() : usage variations ***
+
+-- Pass a two-dimensional array as $input argument --
+array(3) {
+  [u"ENGLISH"]=>
+  array(3) {
+    [u"one"]=>
+    int(1)
+    [u"two"]=>
+    int(2)
+    [u"three"]=>
+    int(3)
+  }
+  [u"FRENCH"]=>
+  array(3) {
+    [u"un"]=>
+    int(1)
+    [u"deux"]=>
+    int(2)
+    [u"trois"]=>
+    int(3)
+  }
+  [u"GERMAN"]=>
+  array(3) {
+    [u"eins"]=>
+    int(1)
+    [u"zwei"]=>
+    int(2)
+    [u"drei"]=>
+    int(3)
+  }
+}
+
+-- Pass a sub-arry as $input argument --
+array(3) {
+  [u"ONE"]=>
+  int(1)
+  [u"TWO"]=>
+  int(2)
+  [u"THREE"]=>
+  int(3)
+}
+Done
\ No newline at end of file

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