multidimensional in_array search

[lucianoes]

How do I check the existence of a key in a sub-array of a multidimensional array?
Suppose I have:

$bigarray = (
$sub1 => array ('a', 'b', 'c'),
$sub2 => array ('e', 'f', 'g'),
$sub3 => array ('h', 'i', 'j')
);

$target = 'g';
if (in_array($target, $bigarray["sub2"])
{print "target found";}

// the example above works fine, but if I have MANY keys in MANY sub-arrays, I cannot just use:

$target = 'g';
if (in_array($target, $bigarray)
{print "target found";}

... or can I? How?

Thank you very much,
    Luciano ES
    Santos, SP - Brasil

[Anon]

Quick hack of a function - uses recursion.

function inbigarray($str, $arr, $pass=false)
{
if (is_array($arr))
{
reset($arr);
while (list($k, $v)=each($arr))
if (in_multi_array($str, $v))
return true;
}
if ($str==$arr)
return true;
return false;
}

Hope this helps!

Cheers,

Ben