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June 21st, 2017, 02:13 AM  #11 
Member Joined: May 2017 From: Russia Posts: 34 Thanks: 5 
<?php \$d= hexdec("A8"); for (\$n=0; \$n < 6; \$n++) { echo dechex(++\$d) . PHP_EOL; } ?> Last edited by skipjack; June 21st, 2017 at 02:16 AM. 
July 11th, 2017, 11:57 AM  #12  
Newbie Joined: Jul 2017 From: US Posts: 7 Thanks: 0  Quote:
A good book would be a book reference for Hexadecimal and PHP, not a math book.  
October 12th, 2017, 04:53 AM  #13 
Math Team Joined: Jan 2015 From: Alabama Posts: 2,976 Thanks: 807 
Is this question about PHP programming or just about the mathematics? The mathematics is: "A8" in hexadecimal is the same as 10(16)+ 8= 168 in decimal. Incrementing that, 168+ 1= 169= 10(16)+ 9= "A9" in hexadecimal. Incrementing again,169+ 1= 170= 10(16)+ 10= "AA" in hexadecimal. Incrementing again, 170+ 1= 171= 10(16)+ 11= "AB" in hexadecimal. Incrementing again, 171+ 1= 172= 10(16)+ 12= "AC" in hexadecimal. Incrementing again, 172+ 1= 173= 10(16)+ 13= "AD" in hexadecimal. We can keep on incrementing in exactly that way to 175= 10(16)+ 15= "AF" but after that 175+ 1= 176= 11(16)+ 0= "B0" in hexadecimal. Last edited by skipjack; October 12th, 2017 at 08:21 AM. 

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hexadecimal, php, pls, stucked 
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