--TEST--
Test array_map() function : usage variations - built-in function as callback
--FILE--
<?php
/* Prototype : array array_map ( callback $callback , array $arr1 [, array $... ] )
* Description: Applies the callback to the elements of the given arrays
* Source code: ext/standard/array.c
*/
/*
* Test array_map() by passing buit-in function as callback function
*/
echo "*** Testing array_map() : built-in function ***\n";
$array1 = array(1, 2, 3);
$array2 = array(3, 4, 5);
echo "-- with built-in function 'pow' and two parameters --\n";
var_dump( array_map('pow', $array1, $array2));
echo "-- with built-in function 'pow' and one parameter --\n";
var_dump( array_map('pow', $array1));
echo "-- with language construct --\n";
var_dump( array_map('echo', $array1));
echo "Done";
?>
--EXPECTF--
*** Testing array_map() : built-in function ***
-- with built-in function 'pow' and two parameters --
array(3) {
[0]=>
int(1)
[1]=>
int(16)
[2]=>
int(243)
}
-- with built-in function 'pow' and one parameter --
Warning: pow() expects exactly 2 parameters, 1 given in %s on line %d
Warning: pow() expects exactly 2 parameters, 1 given in %s on line %d
Warning: pow() expects exactly 2 parameters, 1 given in %s on line %d
array(3) {
[0]=>
NULL
[1]=>
NULL
[2]=>
NULL
}
-- with language construct --
Warning: array_map() expects parameter 1 to be a valid callback, function 'echo' not found or invalid function name in %s on line %d
NULL
Done
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