note 21086 added to function.dechex

From: Date: Sun, 28 Apr 2002 13:21:06 +0000
Subject: note 21086 added to function.dechex
Groups: php.notes 
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Here are two functions that will convert large dec numbers to hex and vice versa. And I really mean LARGE, much larger than any function posted earlier. <pre> // Input: A decimal number as a String. // Output: The equivalent hexadecimal number as a String. function dec2hex($number) { $hexvalues = array('0','1','2','3','4','5','6','7', '8','9','A','B','C','D','E','F'); $hexval = ''; while($number != '0') { $hexval = $hexvalues[bcmod($number,'16')].$hexval; $number = bcdiv($number,'16',0); } return $hexval; } // Input: A hexadecimal number as a String. // Output: The equivalent decimal number as a String. function hex2dec($number) { $decvalues = array('0' => '0', '1' => '1', '2' => '2', '3' => '3', '4' => '4', '5' => '5', '6' => '6', '7' => '7', '8' => '8', '9' => '9', 'A' => '10', 'B' => '11', 'C' => '12', 'D' => '13', 'E' => '14', 'F' => '15'); $decval = '0'; $number = strrev($number); for($i = 0; $i < strlen($number); $i++) { $decval = bcadd(bcmul(bcpow('16',$i,0),$decvalues[$number{$i}]), $decval); } return $decval; } </pre> -- http://www.php.net/manual/en/function.dechex.php http://master.php.net/manage/user-notes.php?action=edit+21086 http://master.php.net/manage/user-notes.php?action=delete+21086 http://master.php.net/manage/user-notes.php?action=reject+21086

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