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--TEST--
Test array_reduce() function
--INI--
precision=14
--FILE--
<?php
/* Prototype: array array_reduce(array $array, mixed $callback, mixed $initial);
Description: Iteratively reduce the array to a single value via the callback
*/
$array = array('foo', 'foo', 'bar', 'qux', 'qux', 'quux');
echo "\n*** Testing array_reduce() to integer ***\n";
function reduce_int($w, $v) { return $w + strlen($v); }
$initial = 42;
var_dump(array_reduce($array, 'reduce_int', $initial), $initial);
echo "\n*** Testing array_reduce() to float ***\n";
function reduce_float($w, $v) { return $w + strlen($v) / 10; }
$initial = 4.2;
var_dump(array_reduce($array, 'reduce_float', $initial), $initial);
echo "\n*** Testing array_reduce() to string ***\n";
function reduce_string($w, $v) { return $w . $v; }
$initial = 'quux';
var_dump(array_reduce($array, 'reduce_string', $initial), $initial);
echo "\n*** Testing array_reduce() to array ***\n";
function reduce_array($w, $v) { $w[$v]++; return $w; }
$initial = array('foo' => 42, 'bar' => 17, 'qux' => -2, 'quux' => 0);
var_dump(array_reduce($array, 'reduce_array', $initial), $initial);
echo "\n*** Testing array_reduce() to null ***\n";
function reduce_null($w, $v) { return $w . $v; }
$initial = null;
var_dump(array_reduce($array, 'reduce_null', $initial), $initial);
echo "\nDone";
?>
--EXPECT--
*** Testing array_reduce() to integer ***
int(61)
int(42)
*** Testing array_reduce() to float ***
float(6.1)
float(4.2)
*** Testing array_reduce() to string ***
string(23) "quuxfoofoobarquxquxquux"
string(4) "quux"
*** Testing array_reduce() to array ***
array(4) {
["foo"]=>
int(44)
["bar"]=>
int(18)
["qux"]=>
int(0)
["quux"]=>
int(1)
}
array(4) {
["foo"]=>
int(42)
["bar"]=>
int(17)
["qux"]=>
int(-2)
["quux"]=>
int(0)
}
*** Testing array_reduce() to null ***
string(19) "foofoobarquxquxquux"
NULL
Done
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