Oh Wise Ones, I have stumbled across an issue I have some difficulties with.
I've been tasked with modifying an existing file that contains id's in hex format(below is actual example). Now I need to generate additional id's by an increment of 1. 
$hex="24d0e803adb7";
$dec=hex($hex);

[download]
I get the following:
Integer overflow in hexadecimal number at

Can someone give me a pointer as to how to get around this issue?

Thanks,
Wisdom Seeker

In reply to Hex to decimal resulting in integer overflow by Anonymous Monk

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