print hex(c030), "\n";  # prints "49200"
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Update: actually, on closer examination, you want to actually catenate 8-bit values into a big hex string. If this is the case, jeroenes has answered that above... I worked on a program awhile back in which I used something like:

$aschex.=uc(sprintf("%02x",ord($rawhex)));
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Me spell chucker work grate. Need grandma chicken.