Validate_CPF ( _Num )

Validate Brazilian CPF number

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FCO
FCO

Sample input:

Validate_CPF ("123.456.789-09")

Sample output:

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Let ( 
[ 
lencpf = 11 ; 
num = Filter ( _Num ; "0123456789" ) ; 
digit0 = Middle ( num ; 10 ; 1 ) ; 
digit1 = Middle ( num ; 11 ; 1 ) ; 
lnum = Length ( num ) ; 
len_ok = GetAsBoolean ( lnum = lencpf ) ; 

p10 = Middle ( num ; 1 ; 1 ) * 10 ; 
p09 = Middle ( num ; 2 ; 1 ) * 9 ; 
p08 = Middle ( num ; 3 ; 1 ) * 8 ; 
p07 = Middle ( num ; 4 ; 1 ) * 7 ; 
p06 = Middle ( num ; 5 ; 1 ) * 6 ; 
p05 = Middle ( num ; 6 ; 1 ) * 5 ; 
p04 = Middle ( num ; 7 ; 1 ) * 4 ; 
p03 = Middle ( num ; 8 ; 1 ) * 3 ; 
p02 = Middle ( num ; 9 ; 1 ) * 2 ; 
s0 = p10 + p09 + p08 + p07 + p06 + p05 + p04 + p03 + p02 ; 
d0 = Mod ( s0 ; 11 ) ; 
d0 = Case ( d0 = 1 or d0 = 0 ; 0 ; 11 - d0 ) ; 

p11 = Middle ( num ; 1 ; 1 ) * 11 ; 
p10 = Middle ( num ; 2 ; 1 ) * 10 ; 
p09 = Middle ( num ; 3 ; 1 ) * 9 ; 
p08 = Middle ( num ; 4 ; 1 ) * 8 ; 
p07 = Middle ( num ; 5 ; 1 ) * 7 ; 
p06 = Middle ( num ; 6 ; 1 ) * 6 ; 
p05 = Middle ( num ; 7 ; 1 ) * 5 ; 
p04 = Middle ( num ; 8 ; 1 ) * 4 ; 
p03 = Middle ( num ; 9 ; 1 ) * 3 ; 
p02 = d0 * 2 ; 
s1 = p11 + p10 + p09 + p08 + p07 + p06 + p05 + p04 + p03 + p02 ; 
d1 = Mod ( s1 ; 11 ) ; 
d1 = Case ( d1 = 1 or d1 = 0 ; 0 ; 11 - d1 ) ; 

is_ok = GetAsBoolean ( digit0 = d0 and digit1 = d1 ) 

] ; 

Case ( 
IsEmpty ( _Num ) ; -3 ; // parameter is empty
not len_ok ; -2 ; // number of digits <> 11
not is_ok ; -1 ; // incorrect entry
1 
) 

)

Description:
In Brazil there is a CPF (Cadastro de Pessoas Físicas) number which serves to identify each individual in the country. The number composes of eleven numeric digits, being the two last ones the checking digits.

The function calculates the two checking digits, based on the nine preceding digits.

Input:
the eleven numeric digits for a CPF number

Output:
-3 (parameter is empty)
-2 (number of digits <> 11)
-1 (incorrect entry)
1 (OK)

Examples:
lnput: Validate_CPF (12345678909)
Output: 1

lnput: Validate_CPF ("123.456.789-09")
Output: 1

You can modify the Case result numbers to return a Boolean calculation, so that the function could be tested as GetAsBoolean ( Validate_CPF (_Num) ).

Comments

		Gabriel Teixeira, FlorianÃ³polis/Brazil Jan 18, 2013
ParabÃ©ns por compartilhar a funÃ§Ã£o, jÃ¡ possuo uma funÃ§Ã£o para este fim, mas vou armazenar esta comigo tambÃ©m. AbraÃ§os.

		Joan Dagostino, DF Sep 8, 2014
wwfw

		kelly, Brazil Sep 12, 2014
hi

		Yulia, Brazilia Oct 1, 2014
i need this number

		mickey, SP Jun 14, 2015
dd

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

Validate_CPF ( _Num )

Comments

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