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--TEST--
Test usort() function : usage variations - Anonymous comparison function
--FILE--
<?php
/* Prototype : bool usort(array $array_arg, string $cmp_function)
* Description: Sort an array by values using a user-defined comparison function
* Source code: ext/standard/array.c
*/
/*
* Pass an anonymous comparison function as $cmp_function argument to test behaviour()
*/
echo "*** Testing usort() : usage variation ***\n";
$cmp_function = 'if($value1 == $value2) {return 0;} else if($value1 > $value2) {return 1;} else{return -1;}';
$array_arg = array(0 => 100, 1 => 3, 2 => -70, 3 => 24, 4 => 90);
echo "\n-- Anonymous 'cmp_function' with parameters passed by value --\n";
var_dump( usort($array_arg, create_function('$value1, $value2',$cmp_function) ) );
var_dump($array_arg);
$array_arg = array("b" => "Banana", "m" => "Mango", "a" => "Apple", "p" => "Pineapple");
echo "\n-- Anonymous 'cmp_function' with parameters passed by reference --\n";
var_dump( usort($array_arg, create_function('&$value1, &$value2', $cmp_function) ) );
var_dump($array_arg);
?>
===DONE===
--EXPECTF--
*** Testing usort() : usage variation ***
-- Anonymous 'cmp_function' with parameters passed by value --
bool(true)
array(5) {
[0]=>
int(-70)
[1]=>
int(3)
[2]=>
int(24)
[3]=>
int(90)
[4]=>
int(100)
}
-- Anonymous 'cmp_function' with parameters passed by reference --
bool(true)
array(4) {
[0]=>
string(5) "Apple"
[1]=>
string(6) "Banana"
[2]=>
string(5) "Mango"
[3]=>
string(9) "Pineapple"
}
===DONE===
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