Function that Converts Numeric Into Alphanumic

[aeroguy]

Hi i am looking for a function that converts a numeric value, ie 0, 1, 2 ,3 into a four digit alpha number equivalent ie aaaa, aaab, aaac. Not sure how you would go about doing it when you reach double and triple digits.

 

the values should be the following for the alpha numeric

 

0 a

1 b

2 c

3 d

4 e

5 f

6 g

7 h

8 i

9 j

10 k

11 l

12 m

13 n

14 o

15 p

16 q

17 r

18 s

19 t

20 u

21 v

22 w

23 x

24 y

25 z

26 A

27 B

28 C

29 D

30 E

31 F

32 G

33 H

34 I

35 J

26 K

27 L

28 M

29 N

30 O

31 P

32 Q

33 R

34 S

35 T

36 U

37 V

38 W

39 X

40 Y

41 Z

42 0

43 1

44 2

45 3

46 4

47 5

48 6

49 7

50 8

51 9

[ignace]

What is it that you want to do? What is this for?

[sspoke]

look at ASCII Table

 

 

you will see small 'a' starts at 97 dec

you will also see they are in order small 'z' = 122

 

so the math for 0 = a would be

 

Now look at A-Z starts from 65 to 90

if(($number + 97) >= 97 && ($number + 97) <= 122) {
echo chr($number+97); //will show a,b,c,..,x,y,z.
} elseif((($number-26)+65) >= 65 && (($number-26)+65) <= 90) {
echo chr(($number-26)+65); //will show A,B,C...X,Y,Z
}
//do same for numbers got bored to finish it
}

 

idk if php function exists but it's sure as hell easy to code this yourself. takes no more then a minute honestly

[micah1701]

you could make an array of the keys and values you want, like this:

<?php
$letters = array(0 =>"a",1=>"b",2=>"c",3=>"etc");
?>

 

 

then if you have 4 numbers, like 3102 you would just do:

<?php

$alpha_string = $letters[3].$letters[1].$letters[0].$letters[2];
echo $alpha_string;

?>

[ignace]

then if you have 4 numbers, like 3102 you would just do:

<?php

$alpha_string = $letters[3].$letters[1].$letters[0].$letters[2];
echo $alpha_string;

?>

 

Yes, but then like the OP already mentioned what if 31 represents 31? followed by 0 and 2

 

$alpha_string = $letters[31].$letters[0].$letters[2];