Coding a permutation functions : ID into a 6 chars string in PHP
€250-750 EUR
Pagado a la entrega
For a project of mine coded in PHP with Laravel, I'm having a customer table in my database. This table has an ID with auto-increment.
I'm trying to code a function to transform that ID into a string following specific rules :
- The size of the string is 6 caracters maximum
- Caracters in the string are part of [0-9a-v]
- This is the : The "Extended Hex" Base 32 Alphabet
- No maj in the letters
- the letters will be incremented from left
- the numbers will be incremented from right
When I'm inserting a new customer into the database, I should call a function that will transform the ID just generated into a specific string. Here is an example with on the left, the string it should be transformed into, and on the right the ID in the database :
000001 = 0 000 001
999999 = 0 999 999
a00000 = 1 000 000
a00001 = 1 000 001
a10000 = 1 010 000
a99999 = 1 099 999
b00000 = 1 100 000
b99999 = 1 199 999
c00000 = 1 200 000
d00000 = 1 300 000
e00000 = 1 400 000
f00000 = 1 500 000
g00000 = 1 600 000
h00000 = 1 700 000
i00000 = 1 800 000
j00000 = 1 900 000
k00000 = 2 000 000
v00000 = 3 200 000
v99999 = 3 999 999
aa0000 = 4 000 000
aa0001 = 4 000 001
ab0000 = 4 010 000
ac0000 = 4 020 000
ad0000 = 4 030 000
ae0000 = 4 040 000
af0000 = 4 050 000
ag0000 = 4 060 000
ah0000 = 4 070 000
ai0000 = 4 080 000
aj0000 = 4 090 000
ak0000 = 4 100 000
av0000 = 4 200 000
av9999 = 4 209 999
ba0000 = 4 210 000
...
vvvvvv = Number maximum of possible permutations so : 652 458 240
<!> : Maybe I did some mistakes in my calculations.
I need someone to code my that function because I'm totally blocking.
The function should be provided like this :
/**
* Generate identifier associated to the ID of the customer
*
* @param <int> $customerID The customer id
*
* @return <string> $identifier The identifier associated to the customer
*/
function generateCustomerIdentifier($customerID)
Examples :
generateCustomerIdentifier(1) should return : 000001
generateCustomerIdentifier(999999) should return : 999999
generateCustomerIdentifier(1000000) should return : a00000
generateCustomerIdentifier(652458240) should return : vvvvvv
I need this ASAP.
Nº del proyecto: #14657395
