<?php function bcmul_hex($h1, $h2) { $dec = bcmul($h1, $h2); $hex = ''; do { $last = bcmod($dec, 16); $hex = dechex($last).$hex; $dec = bcdiv(bcsub($dec, $last), 16); } while($dec>0); return $hex; } echo bcmul_hex(0xB5365D09, 0xDEBC252C);
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