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A PHP library to calculate and check the italian tax code (codice fiscale).

Read this in Italian.

Install

You can install the library using composer:

$ composer require schema31/php-it-tax-code-sdk

How to use

Calculate a codice fiscale

Use the calculator to calculate the codice fiscale.

use CodiceFiscale\Calculator;
use CodiceFiscale\Subject;

$subject = new Subject(
  array(
    "name" => "Mario",
    "surname" => "Rossi",
    "birthDate" => "1985-12-10",
    "gender" => "M",
    "belfioreCode" => "A562"
  )
);

$calculator = new Calculator($subject);
$codiceFiscale = $calculator->calculate();
echo $codiceFiscale; //"RSSMRA85T10A562S"

You can also add an array for additional configuration for the Calculator. Available array keys are:

"omocodiaLevel": specifies the level of omocodia that the Calculator should consider.

use CodiceFiscale\Calculator;
use CodiceFiscale\Subject;

$subject = new Subject(
  array(
    "name" => "Mario",
    "surname" => "Rossi",
    "birthDate" => "1985-12-10",
    "gender" => "M",
    "belfioreCode" => "A562"
  )
);

$calculator = new Calculator($subject, array(
  "omocodiaLevel" => $omocodiaLevel
));
$codiceFiscale = $calculator->calculate();
echo $codiceFiscale; //"RSSMRA85T10A56NH"

You can also calculate all codici fiscali that a subject could have (using all 128 available levels).

use CodiceFiscale\Calculator;
use CodiceFiscale\Subject;

$subject = new Subject(
  array(
    "name" => "Mario",
    "surname" => "Rossi",
    "birthDate" => "1985-12-10",
    "gender" => "M",
    "belfioreCode" => "A562"
  )
);

$calculator = new Calculator($subject);
$codiciFiscali = $calculator->calculateAllPossibilities();
print_r($codiciFiscali);
/*
Array
(
    [0] => RSSMRA85T10A562S
    [1] => RSSMRA85T10A56NH
    [2] => RSSMRA85T10A5S2E
    [3] => RSSMRA85T10A5SNT
    [4] => RSSMRA85T10AR62N
    [5] => RSSMRA85T10AR6NC
    [6] => RSSMRA85T10ARS2Z
    [7] => RSSMRA85T10ARSNO
    [8] => RSSMRA85T1LA562V
    [9] => RSSMRA85T1LA56NK
    [10] => RSSMRA85T1LA5S2H
    [11] => RSSMRA85T1LA5SNW
    [12] => RSSMRA85T1LAR62Q
    [13] => RSSMRA85T1LAR6NF
    [14] => RSSMRA85T1LARS2C
    [15] => RSSMRA85T1LARSNR
    [16] => RSSMRA85TM0A562D
    [17] => RSSMRA85TM0A56NS
    [18] => RSSMRA85TM0A5S2P
    [19] => RSSMRA85TM0A5SNE
    [20] => RSSMRA85TM0AR62Y
    [21] => RSSMRA85TM0AR6NN
    [22] => RSSMRA85TM0ARS2K
    [23] => RSSMRA85TM0ARSNZ
    [24] => RSSMRA85TMLA562G
    [25] => RSSMRA85TMLA56NV
    [26] => RSSMRA85TMLA5S2S
    [27] => RSSMRA85TMLA5SNH
    [28] => RSSMRA85TMLAR62B
    [29] => RSSMRA85TMLAR6NQ
    [30] => RSSMRA85TMLARS2N
    [31] => RSSMRA85TMLARSNC
    [32] => RSSMRA8RT10A562E
    [33] => RSSMRA8RT10A56NT
    [34] => RSSMRA8RT10A5S2Q
    [35] => RSSMRA8RT10A5SNF
    [36] => RSSMRA8RT10AR62Z
    [37] => RSSMRA8RT10AR6NO
    [38] => RSSMRA8RT10ARS2L
    [39] => RSSMRA8RT10ARSNA
    [40] => RSSMRA8RT1LA562H
    [41] => RSSMRA8RT1LA56NW
    [42] => RSSMRA8RT1LA5S2T
    [43] => RSSMRA8RT1LA5SNI
    [44] => RSSMRA8RT1LAR62C
    [45] => RSSMRA8RT1LAR6NR
    [46] => RSSMRA8RT1LARS2O
    [47] => RSSMRA8RT1LARSND
    [48] => RSSMRA8RTM0A562P
    [49] => RSSMRA8RTM0A56NE
    [50] => RSSMRA8RTM0A5S2B
    [51] => RSSMRA8RTM0A5SNQ
    [52] => RSSMRA8RTM0AR62K
    [53] => RSSMRA8RTM0AR6NZ
    [54] => RSSMRA8RTM0ARS2W
    [55] => RSSMRA8RTM0ARSNL
    [56] => RSSMRA8RTMLA562S
    [57] => RSSMRA8RTMLA56NH
    [58] => RSSMRA8RTMLA5S2E
    [59] => RSSMRA8RTMLA5SNT
    [60] => RSSMRA8RTMLAR62N
    [61] => RSSMRA8RTMLAR6NC
    [62] => RSSMRA8RTMLARS2Z
    [63] => RSSMRA8RTMLARSNO
    [64] => RSSMRAU5T10A562P
    [65] => RSSMRAU5T10A56NE
    [66] => RSSMRAU5T10A5S2B
    [67] => RSSMRAU5T10A5SNQ
    [68] => RSSMRAU5T10AR62K
    [69] => RSSMRAU5T10AR6NZ
    [70] => RSSMRAU5T10ARS2W
    [71] => RSSMRAU5T10ARSNL
    [72] => RSSMRAU5T1LA562S
    [73] => RSSMRAU5T1LA56NH
    [74] => RSSMRAU5T1LA5S2E
    [75] => RSSMRAU5T1LA5SNT
    [76] => RSSMRAU5T1LAR62N
    [77] => RSSMRAU5T1LAR6NC
    [78] => RSSMRAU5T1LARS2Z
    [79] => RSSMRAU5T1LARSNO
    [80] => RSSMRAU5TM0A562A
    [81] => RSSMRAU5TM0A56NP
    [82] => RSSMRAU5TM0A5S2M
    [83] => RSSMRAU5TM0A5SNB
    [84] => RSSMRAU5TM0AR62V
    [85] => RSSMRAU5TM0AR6NK
    [86] => RSSMRAU5TM0ARS2H
    [87] => RSSMRAU5TM0ARSNW
    [88] => RSSMRAU5TMLA562D
    [89] => RSSMRAU5TMLA56NS
    [90] => RSSMRAU5TMLA5S2P
    [91] => RSSMRAU5TMLA5SNE
    [92] => RSSMRAU5TMLAR62Y
    [93] => RSSMRAU5TMLAR6NN
    [94] => RSSMRAU5TMLARS2K
    [95] => RSSMRAU5TMLARSNZ
    [96] => RSSMRAURT10A562B
    [97] => RSSMRAURT10A56NQ
    [98] => RSSMRAURT10A5S2N
    [99] => RSSMRAURT10A5SNC
    [100] => RSSMRAURT10AR62W
    [101] => RSSMRAURT10AR6NL
    [102] => RSSMRAURT10ARS2I
    [103] => RSSMRAURT10ARSNX
    [104] => RSSMRAURT1LA562E
    [105] => RSSMRAURT1LA56NT
    [106] => RSSMRAURT1LA5S2Q
    [107] => RSSMRAURT1LA5SNF
    [108] => RSSMRAURT1LAR62Z
    [109] => RSSMRAURT1LAR6NO
    [110] => RSSMRAURT1LARS2L
    [111] => RSSMRAURT1LARSNA
    [112] => RSSMRAURTM0A562M
    [113] => RSSMRAURTM0A56NB
    [114] => RSSMRAURTM0A5S2Y
    [115] => RSSMRAURTM0A5SNN
    [116] => RSSMRAURTM0AR62H
    [117] => RSSMRAURTM0AR6NW
    [118] => RSSMRAURTM0ARS2T
    [119] => RSSMRAURTM0ARSNI
    [120] => RSSMRAURTMLA562P
    [121] => RSSMRAURTMLA56NE
    [122] => RSSMRAURTMLA5S2B
    [123] => RSSMRAURTMLA5SNQ
    [124] => RSSMRAURTMLAR62K
    [125] => RSSMRAURTMLAR6NZ
    [126] => RSSMRAURTMLARS2W
    [127] => RSSMRAURTMLARSNL
)
*/

Check if it is valid

Use the checker to check if the given codice fiscale is ok for the given Subject and additional configuration. The additional configuration array for the Checker has the given available keys:

"codiceFiscaleToCheck": the codice fiscale to check;
"omocodiaLevel": the omocodia level to use to check.

use CodiceFiscale\Checker;
use CodiceFiscale\Subject;

$subject = new Subject(
  array(
    "name" => "Mario",
    "surname" => "Rossi",
    "birthDate" => "1985-12-10",
    "gender" => "M",
    "belfioreCode" => "A562"
  )
);

$checker = new Checker($subject, array(
  "codiceFiscaleToCheck" => "RSSMRA85T10A562S",
  "omocodiaLevel" => 0
));

$response = $checker->check();
echo $response; // true

You can also provide as omocodiaLevel key, the value of Checker::ALL_OMOCODIA_LEVELS that will check for all the possibilities for the given Subject. In the following example, the Subject would not be valid for the given codice fiscale, but it will be so, cause the check will iterate over all the possibilities for the different omocodia levels.

use CodiceFiscale\Checker;
use CodiceFiscale\Subject;

$subject = new Subject(
  array(
    "name" => "Roberto",
    "surname" => "Santi",
    "birthDate" => "1963-05-08",
    "gender" => "M",
    "belfioreCode" => "H501"
  )
);

$checker = new Checker($subject, array(
  "codiceFiscaleToCheck" => "SNTRRT63E08H50ML",
  "omocodiaLevel" => Checker::ALL_OMOCODIA_LEVELS
));

$response = $checker->check();
echo $response; // true

Formal validation

Use the Validator to verify if the given codice fiscale is formally valid. The additional configuration array for the Validator has the given available keys:

"omocodiaAllowed": whether to allow or not omocodia, defaults to true;
"century": for people over 100 years old, it is not possibile to derive unambiguously birth year, so you can specify the century (for example '18' for a person birth in 1899). It allows to check birth date existence. Defaults to null (auto calculation of the century).

use CodiceFiscale\Validator;

$codiceFiscale = "RSSMRA85T10A562S";

$validator = new Validator($codiceFiscale);

$response = $validator->isFormallyValid();
echo $response; // true

Inverse calculation

Use the InverseCalculator to extract birth date, gender and the belfiore code from the given codice fiscale. The additional configuration array for the InverseCalculator has the keys already described for the Validator.

use CodiceFiscale\InverseCalculator;

$codiceFiscale = "RSSMRA85T10A562S";

$inverseCalculator = new InverseCalculator($codiceFiscale);

$subject = $inverseCalculator->getSubject();
var_dump($subject);
// object(CodiceFiscale\Subject)[449]
//   private 'name' => null
//   private 'surname' => null
//   private 'birthDate' => 
//     object(DateTime)[452]
//       public 'date' => string '1985-12-10 00:00:00.000000' (length=26)
//       public 'timezone_type' => int 3
//       public 'timezone' => string 'Europe/Berlin' (length=13)
//   private 'gender' => string 'M' (length=1)
//   private 'belfioreCode' => string 'A562' (length=4)

Test

$ vendor\bin\phpunit

schema31 / php-it-tax-code-sdk

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