Just wrap it, like Example 1 of the manual shows
function my_echo($array, $key) {
echo $array[$key];
}
array_walk_recursive($array, 'my_echo');
> Date: Fri, 7 Apr 2006 15:42:40 +0100
> From: Chris Boget <chris.boget@xxxxxxxx>
> To: php-general@xxxxxxxxxxxxx
> Subject: echo, print and is_callable()/function_exists()
>
> Because both echo and print are language constructs and not actual
> functions, you can't seem to use either is_callable() or
> function_exists() on either to determine if they are valid 'function'
> calls. Is there any other way to determine to check to see if I can
> execute either or? I'm writing a version of array_walk_recursive() (it
> doesn't exist in the version of PHP we are using) and if I try to pass
> in either echo or print as the function, nothing ever happens because
> neither resolves as an executable function...
>
> Any ideas as to how I can get around this?
>
> thnx,
> Chris
>
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