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|
--TEST--
Test uasort() function : usage variations - sort different numeric values
--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
*/
/*
* sorting different types of numeric arrays containing data of following type:
* integer, octal, hexadecimal & float
*/
// comparison function
/* Prototype : int cmp_function(mixed $value1, mixed $value2)
* Parameters : $value1 and $value2 - values to be compared
* Return value : 0 - if both values are same
* 1 - if value1 is greater than value2
* -1 - if value1 is less than value2
* Description : compares value1 and value2
*/
function cmp_function($value1, $value2)
{
if($value1 == $value2) {
return 0;
}
else if($value1 > $value2) {
return 1;
}
else {
return -1;
}
}
echo "*** Testing uasort() : different numeric arrays as 'array_arg' ***\n";
// Int array
$int_values = array(0 => 3, 1 => 2, 3 => 100, 4 => 150, 5 => 25, 6 => 350, 7 => 0, 8 => -3, 9 => -1200);
echo "-- Sorting Integer array --\n";
var_dump( uasort($int_values, 'cmp_function') ); // expecting: bool(true)
var_dump($int_values);
// Octal array
$octal_values = array(0 => 056, 1 => 023, 2 => 00, 3 => 015, 4 => -045, 5 => 01, 6 => -07);
echo "-- Sorting Octal array --\n";
var_dump( uasort($octal_values, 'cmp_function') ); // expecting: bool(true)
var_dump($octal_values);
// Hexadecimal array
$hex_values = array(0 => 0xAE, 1 => 0x2B, 2 => 0X10, 3 => -0xCF, 4 => 0X12, 5 => -0XF2);
echo "-- Sorting Hex array --\n";
var_dump( uasort($hex_values, 'cmp_function') ); // expecting: bool(true)
var_dump($hex_values);
// Float array
$float_values = array( 0 => 10.2, 1 => 2.4, 2 => -3.4, 3 => 0, 4 => 0.5, 5 => 7.3e3, 6 => -9.34E-2);
echo "-- Sorting Float array --\n";
var_dump( uasort($float_values, 'cmp_function') ); // expecting: bool(true)
var_dump($float_values);
// empty array
$empty_array = array();
echo "-- Sorting empty array --\n";
var_dump( uasort($empty_array, 'cmp_function') ); // expecting: bool(true)
var_dump($empty_array);
echo "Done"
?>
--EXPECTF--
*** Testing uasort() : different numeric arrays as 'array_arg' ***
-- Sorting Integer array --
bool(true)
array(9) {
[9]=>
int(-1200)
[8]=>
int(-3)
[7]=>
int(0)
[1]=>
int(2)
[0]=>
int(3)
[5]=>
int(25)
[3]=>
int(100)
[4]=>
int(150)
[6]=>
int(350)
}
-- Sorting Octal array --
bool(true)
array(7) {
[4]=>
int(-37)
[6]=>
int(-7)
[2]=>
int(0)
[5]=>
int(1)
[3]=>
int(13)
[1]=>
int(19)
[0]=>
int(46)
}
-- Sorting Hex array --
bool(true)
array(6) {
[5]=>
int(-242)
[3]=>
int(-207)
[2]=>
int(16)
[4]=>
int(18)
[1]=>
int(43)
[0]=>
int(174)
}
-- Sorting Float array --
bool(true)
array(7) {
[2]=>
float(-3.4)
[6]=>
float(-0.0934)
[3]=>
int(0)
[4]=>
float(0.5)
[1]=>
float(2.4)
[0]=>
float(10.2)
[5]=>
float(7300)
}
-- Sorting empty array --
bool(true)
array(0) {
}
Done
|
