<?hh
/* Prototype  : array array_unique(array $input)
 * Description: Removes duplicate values from array
 * Source code: ext/standard/array.c
*/

/*
 * Testing the functionality of array_unique() by passing
 * array having duplicate keys as values.
*/
<<__EntryPoint>> function main(): void {
echo "*** Testing array_unique() : array with duplicate keys for \$input argument ***\n";

// initialize the array having duplicate keys
$input = darray[1 => "one", 2 => "two", 2 => "2", 3 => "three", 1 => "1", 4 => "1", 5 => "2"];
var_dump( array_unique($input) );

echo "Done";
}