The PHP OCR SDK supports the W9 API.

Using the sample below, we are going to illustrate how to extract the data that we want using the OCR SDK.
W9 sample



use Mindee\Client;
use Mindee\Product\Us\W9\W9V1;

// Init a new client
$mindeeClient = new Client("my-api-key");

// Load a file from disk
$inputSource = $mindeeClient->sourceFromPath("/path/to/the/file.ext");

// Parse the file
$apiResponse = $mindeeClient->parse(W9V1::class, $inputSource);

echo strval($apiResponse->document);

Output (RST):

:Mindee ID: d7c5b25f-e0d3-4491-af54-6183afa1aaab
:Filename: default_sample.jpg

:Product: mindee/us_w9 v1.0
:Rotation applied: Yes


Page Predictions

Page 0
:Name: Stephen W Hawking
:SSN: 560758145
:Address: Somewhere In Milky Way
:City State Zip: Probably Still At Cambridge P O Box CB1
:Business Name:
:EIN: 942203664
:Tax Classification: individual
:Tax Classification Other Details:
:W9 Revision Date: august 2013
:Signature Position: Polygon with 4 points.
:Signature Date Position:
:Tax Classification LLC:

Field Types

Standard Fields

These fields are generic and used in several products.


Each prediction object contains a set of fields that inherit from the generic BaseField class.
A typical BaseField object will have the following attributes:

  • value (float|string): corresponds to the field value. Can be null if no value was extracted.
  • confidence (float): the confidence score of the field prediction.
  • boundingBox ([Point, Point, Point, Point]): contains exactly 4 relative vertices (points) coordinates of a right rectangle containing the field in the document.
  • polygon (Point[]): contains the relative vertices coordinates (Point) of a polygon containing the field in the image.
  • pageId (integer): the ID of the page, is null when at document-level.
  • reconstructed (bool): indicates whether an object was reconstructed (not extracted as the API gave it).

Note: A Point simply refers to a List of two numbers ([float, float]).

Aside from the previous attributes, all basic fields have access to a custom __toString method that can be used to print their value as a string.


The position field PositionField does not implement all the basic BaseField attributes, only boundingBox, polygon and pageId. On top of these, it has access to:

  • rectangle ([Point, Point, Point, Point]): a Polygon with four points that may be oriented (even beyond canvas).
  • quadrangle ([Point, Point, Point, Point]): a free polygon made up of four points.


The text field StringField only has one constraint: its value is an optional ?string.

Page-Level Fields

Some fields are constrained to the page level, and so will not be retrievable to through the document.


The following fields are extracted for W9 V1:


πŸ“„address : The street address (number, street, and apt. or suite no.) of the applicant.

foreach($result->document->address as $addressElem){
    echo $addressElem;

Business Name

πŸ“„businessName : The business name or disregarded entity name, if different from Name.

foreach($result->document->businessName as $businessNameElem){
    echo $businessNameElem;

City State Zip

πŸ“„cityStateZip : The city, state, and ZIP code of the applicant.

foreach($result->document->cityStateZip as $cityStateZipElem){
    echo $cityStateZipElem;


πŸ“„ein : The employer identification number.

foreach($result->document->ein as $einElem){
    echo $einElem;


πŸ“„name : Name as shown on the applicant's income tax return.

foreach($result->document->name as $nameElem){
    echo $nameElem;

Signature Date Position

πŸ“„signatureDatePosition : Position of the signature date on the document.

foreach($result->document->signatureDatePosition as $signatureDatePositionElem){
    echo $signatureDatePositionElem;

Signature Position

πŸ“„signaturePosition : Position of the signature on the document.

foreach($result->document->signaturePosition as $signaturePositionElem){
    echo $signaturePositionElem;


πŸ“„ssn : The applicant's social security number.

foreach($result->document->ssn as $ssnElem){
    echo $ssnElem;

Tax Classification

πŸ“„taxClassification : The federal tax classification, which can vary depending on the revision date.

foreach($result->document->taxClassification as $taxClassificationElem){
    echo $taxClassificationElem;

Tax Classification LLC

πŸ“„taxClassificationLlc : Depending on revision year, among S, C, P or D for Limited Liability Company Classification.

foreach($result->document->taxClassificationLlc as $taxClassificationLlcElem){
    echo $taxClassificationLlcElem;

Tax Classification Other Details

πŸ“„taxClassificationOtherDetails : Tax Classification Other Details.

foreach($result->document->taxClassificationOtherDetails as $taxClassificationOtherDetailsElem){
    echo $taxClassificationOtherDetailsElem;

W9 Revision Date

πŸ“„w9RevisionDate : The Revision month and year of the W9 form.

foreach($result->document->w9RevisionDate as $w9RevisionDateElem){
    echo $w9RevisionDateElem;


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