• Passive Iteration

      0 comments
      28th Feb 10
      Bart

    What will be the out put of the following code snippet ?

    <?php
function setcase(&$value, &$key){
$value = strtoupper($value);
}
$type = array('internal','external');
$format[] = array('rss','html','xml');
$format[] = array('csv','jason');
$map = array_combine($type, $format);
array_walk_recursive($map, 'setcase');
print_r($map);
?>

    Only scalar values will be converted to upper cases. ‘ internal’ and ‘external’ are not passed into the user defined function.

    Array
(
    [internal] =&gt; Array
        (
            [0] =&gt; RSS
            [1] =&gt; HTML
            [2] =&gt; XML
        )

    [external] =&gt; Array
        (
            [0] =&gt; CSV
            [1] =&gt; JASON
        )

)

      Expert level, PHP Questions
      , , , ,