[PHP] Q: array intersection problem

[Joe Rice]

hi,

i have two arrays that i would like
to find the intersection and at
this intersection alter the value.

$invalid = array("1","3","9");
$questions = array("1","2","3","4","5","6","7","8","9");

and i would like the result to be an new array that looks
like this:

$new_questions = array("<font color=red>1</font>",
                       "2",
                       "<font color=red>3</font>",
                       "4","5","6","7","8",
                       "<font color=red>4</font>");

thank you in advance,
joe

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