Filtering the elements of a multi-dimensional array

[Geoff Soper]

I would like to be able to filter every element of a multi-dimensional array
using htmlspecialchars() and to retain the structure of the array. I can't
see how to do this when I don't know how many dimensions the array has.

Any suggestions?

Thanks,
Geoff

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[Andy Hassall]

On Thu, 4 Dec 2003 21:02:51 -0000, "Geoff Soper" <ne*********@alphaworks.co.uk>
wrote:

I would like to be able to filter every element of a multi-dimensional array
using htmlspecialchars() and to retain the structure of the array. I can't
see how to do this when I don't know how many dimensions the array has.

<pre>
<?php

$a = array(
array(
array('&', '&', '&'),
'&',
array('&', '&')
),
'&',
array('&', '&', '&'),
);

print_r($a);

function htmlspecialcharsArray(&$a) {
foreach (array_keys($a) as $key)
if (is_array($a[$key]))
htmlspecialcharsArray($a[$key]);
else
$a[$key] = htmlspecialchars($a[$key]);
}

htmlspecialcharsArray($a);

print_r($a);

?>
</pre>

So long as you don't set up any loops in your arrays, of course :-)

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Andy Hassall (an**@andyh.co.uk) icq(5747695) (http://www.andyh.co.uk)
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