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+--TEST--
+Test uasort() function : usage variations - different associative arrays
+--FILE--
+<?php
+/* Prototype : bool uasort(array $array_arg, string $cmp_function)
+ * Description: Sort an array with a user-defined comparison function and maintain index association
+ * Source code: ext/standard/array.c
+*/
+
+/* Testing uasort() with different associative arrays having keys as
+ * string, integer, default & duplicate keys
+ */
+
+echo "*** Testing uasort() : sorting different associative arrays ***\n";
+
+// comparison function
+/* Prototype : int cmp(mixed $value1, mixed $value2)
+ * Parameters : $value1 and $value2 - values to be compared
+ * Return value : 0 - if both values are same
+ * 1 - if value1 is greater than value2
+ * -1 - if value1 is less than value2
+ * Description : compares value1 and value2
+ */
+function cmp($value1, $value2)
+{
+ if($value1 == $value2) {
+ return 0;
+ }
+ else if($value1 > $value2) {
+ return 1;
+ }
+ else
+ return -1;
+}
+
+// Array with duplicate string and integer keys
+$array_arg = array(0 => 2, "a" => 8, "d" => 9, 3 => 3, 5 => 2, "o" => 6, "z" => -99, 0 => 1, "z" => 3);
+echo "-- Array with duplicate keys --\n";
+var_dump( uasort($array_arg, 'cmp') );
+var_dump($array_arg);
+
+// Array with default and assigned keys
+$array_arg = array(0 => "Banana", 1 => "Mango", "Orange", 2 => "Apple", "Pineapple");
+echo "-- Array with default/assigned keys --\n";
+var_dump( uasort($array_arg, 'cmp') );
+var_dump($array_arg);
+
+echo "Done"
+?>
+--EXPECTF--
+*** Testing uasort() : sorting different associative arrays ***
+-- Array with duplicate keys --
+bool(true)
+array(7) {
+ [0]=>
+ int(1)
+ [5]=>
+ int(2)
+ ["z"]=>
+ int(3)
+ [3]=>
+ int(3)
+ ["o"]=>
+ int(6)
+ ["a"]=>
+ int(8)
+ ["d"]=>
+ int(9)
+}
+-- Array with default/assigned keys --
+bool(true)
+array(4) {
+ [2]=>
+ string(5) "Apple"
+ [0]=>
+ string(6) "Banana"
+ [1]=>
+ string(5) "Mango"
+ [3]=>
+ string(9) "Pineapple"
+}
+Done