Wednesday, July 29, 2009

array walk function

array_walk_recursive(array & input,callback func[, mixed userdata]) to walk with a callback function recursive.


Which key will not be displayed from the following code block?

$array = array('a' => 'John',
'b' => 'Coggeshall',
'c' => array('d' => 'John',
'e' => 'Smith'));

function display($item, $key) {
print "$key => $item\n";

array_walk_recursive($array, "display");



1. d
2. c
any key that contains an array will not be shown.
3. b
4. a
5. They all will be displayed
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