Converting a string to a number by using INT (no hash method)

[Ferrous Cranus]

Τη Τρίτη, 22 Ιανουαρίου 2013 6:27:32 μ.μ. UTC+2, ο χρήστης Leonard, Arah έγραψε:
> > I just need a way to CONVERT a string(absolute path) to a 4-digit unique number with INT!!! That's all i want!! But i cannot make it work :(
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> > And the best part is that "that" number must be able to turn back into a path.
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> > This way i DON'T EVEN HAVE TO STORE THE ACTUAL HTML PAGE'S ABSOLUTE PATH!!!!
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> > 1. User requests a specific html page( .htaccess gives my script the absolute path for that .html page) 2. I turn the path into a 4-digitnumber 3. i store that number to the database. I DONT EVEN HAVE TO STORE THE PATH TO THE DATABASE ANYMORE!!! this is just great!
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> Without involving some kind of lookup table/map service to store the paths (which would entirely >defeat the purpose) what you are ranting about is technically impossible.  If you tried really >really hard you *might* be able to convert a string that long into some kind of 4-digit integer >checksum, but you would *never* be able to convert that back into a file path.  Nor would it be >guaranteed to be unique.

Now that iam thinking of it more and more, i don't have to turn the 'path' back to a 'number'

So, what i want is a function foo() that does this:

foo( "some long string" )  -->  1234

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1. User requests a specific html page( .htaccess gives my script the absolute path for that .html page) 
2. turn the 'path' to 4-digit number and save it as 'pin'  (how?)
3. i store that number to the database. I DONT EVEN HAVE TO STORE THE HTML PAGE'S PATH TO THE DATABASE ANYMORE!!! this is just great! 


At some later time i want to check the weblog of that .html page


1. request the page as:  http://mydomain.gr/index.html?show=log
2. .htaccess gives my script the absolute path of the requested .html file
3. turn the 'path' to 4-digit number and save it as 'pin' (this is what i'am asking)
4. select all log records for that specific .html page  (based on the 'pin' column)


Since i have the requested 'path' which has been converted to a database stored 4-digit number, i'am aware for which page i'am requesting detailed data from, so i look upon the 'pin' column in the database and thus i know which records i want to select.

No need, to turn the number back to a path anymore, just the path to a number, to identify the specific .html page

Can this be done?