/hphp/test/zend/good/ext/standard/tests/array/ksort_basic.php

<?hh
/* Prototype  : bool ksort ( array &$array [, int $sort_flags] )
 * Description: Sort an array by key, maintaining key to data correlation
 * Source code: ext/standard/array.c
*/

/*
 * Testing ksort() by providing  array of integer/string values to check the basic functionality with following flag values :
 *  1.flag value as defualt
 *  2.SORT_REGULAR - compare items normally
 *  3.SORT_NUMERIC - compare items numerically
 *  4.SORT_STRING - compare items as strings
*/
<<__EntryPoint>> function main(): void {
echo "*** Testing ksort() : basic functionality ***\n";

// an array containing unsorted string values with indices
$unsorted_strings =   darray[
    "l" => "lemon", "o" => "orange",
    "O" => "Orange", "O1" => "Orange1", "o2" => "orange2", "O3" => "Orange3", "o20" => "orange20",
    "b" => "banana",
];
// an array containing unsorted numeric values with indices
$unsorted_numerics =  darray[ 100 => 4, 33 => 3, 555 => 2, 22 => 1 ];

echo "\n-- Testing ksort() by supplying string array, 'flag' value is defualt --\n";
$temp_array = $unsorted_strings;
var_dump( ksort(inout $temp_array) ); // expecting : bool(true)
var_dump( $temp_array);

echo "\n-- Testing ksort() by supplying numeric array, 'flag' value is defualt --\n";
$temp_array = $unsorted_numerics;
var_dump( ksort(inout $temp_array) ); // expecting : bool(true)
var_dump( $temp_array);

echo "\n-- Testing ksort() by supplying string array, 'flag' = SORT_REGULAR --\n";
$temp_array = $unsorted_strings;
var_dump( ksort(inout $temp_array, SORT_REGULAR) ); // expecting : bool(true)
var_dump( $temp_array);

echo "\n-- Testing ksort() by supplying numeric array, 'flag' = SORT_REGULAR --\n";
$temp_array = $unsorted_numerics;
var_dump( ksort(inout $temp_array, SORT_REGULAR) ); // expecting : bool(true)
var_dump( $temp_array);

echo "\n-- Testing ksort() by supplying string array, 'flag' = SORT_STRING --\n";
$temp_array = $unsorted_strings;
var_dump( ksort(inout $temp_array, SORT_STRING) ); // expecting : bool(true)
var_dump( $temp_array);

echo "\n-- Testing ksort() by supplying string array (case insensitive), 'flag' = SORT_STRING|SORT_FLAG_CASE --\n";
$temp_array = $unsorted_strings;
var_dump( sort(inout $temp_array, SORT_STRING|SORT_FLAG_CASE) ); // expecting : bool(true)
var_dump( $temp_array);

echo "\n-- Testing ksort() by supplying string array (natural), 'flag' = SORT_NATURAL --\n";
$temp_array = $unsorted_strings;
var_dump( sort(inout $temp_array, SORT_NATURAL) ); // expecting : bool(true)
var_dump( $temp_array);

echo "\n-- Testing ksort() by supplying string array (natural, case insensitive), 'flag' = SORT_NATURAL|SORT_FLAG_CASE --\n";
$temp_array = $unsorted_strings;
var_dump( sort(inout $temp_array, SORT_NATURAL|SORT_FLAG_CASE) ); // expecting : bool(true)
var_dump( $temp_array);

echo "\n-- Testing ksort() by supplying numeric array, 'flag' = SORT_NUMERIC --\n";
$temp_array = $unsorted_numerics;
var_dump( ksort(inout $temp_array, SORT_NUMERIC) ); // expecting : bool(true)
var_dump( $temp_array);

echo "Done\n";
}