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Receipt OCR PHP

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The PHP OCR SDK supports the Receipt API.

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

Quick-Start

<?php

use Mindee\Client;
use Mindee\Product\Receipt\ReceiptV5;

// 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(ReceiptV5::class, $inputSource);

echo $apiResponse->document;

You can also call this product asynchronously:

<?php

use Mindee\Client;
use Mindee\Product\Receipt\ReceiptV5;

// 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 asynchronously
$apiResponse = $mindeeClient->enqueueAndParse(ReceiptV5::class, $inputSource);

echo $apiResponse->document;

Output (RST):

########
Document
########
:Mindee ID: d96fb043-8fb8-4adc-820c-387aae83376d
:Filename: default_sample.jpg

Inference
#########
:Product: mindee/expense_receipts v5.3
:Rotation applied: Yes

Prediction
==========
:Expense Locale: en-GB; en; GB; GBP;
:Purchase Category: food
:Purchase Subcategory: restaurant
:Document Type: EXPENSE RECEIPT
:Purchase Date: 2016-02-26
:Purchase Time: 15:20
:Total Amount: 10.20
:Total Net: 8.50
:Total Tax: 1.70
:Tip and Gratuity:
:Taxes:
  +---------------+--------+----------+---------------+
  | Base          | Code   | Rate (%) | Amount        |
  +===============+========+==========+===============+
  | 8.50          | VAT    | 20.00    | 1.70          |
  +---------------+--------+----------+---------------+
:Supplier Name: Clachan
:Supplier Company Registrations: Type: VAT NUMBER, Value: 232153895
                                 Type: VAT NUMBER, Value: 232153895
:Supplier Address: 34 Kingley Street W1B 50H
:Supplier Phone Number: 02074940834
:Receipt Number: 54/7500
:Line Items:
  +--------------------------------------+----------+--------------+------------+
  | Description                          | Quantity | Total Amount | Unit Price |
  +======================================+==========+==============+============+
  | Meantime Pale                        | 2.00     | 10.20        |            |
  +--------------------------------------+----------+--------------+------------+

Page Predictions
================

Page 0
------
:Expense Locale: en-GB; en; GB; GBP;
:Purchase Category: food
:Purchase Subcategory: restaurant
:Document Type: EXPENSE RECEIPT
:Purchase Date: 2016-02-26
:Purchase Time: 15:20
:Total Amount: 10.20
:Total Net: 8.50
:Total Tax: 1.70
:Tip and Gratuity:
:Taxes:
  +---------------+--------+----------+---------------+
  | Base          | Code   | Rate (%) | Amount        |
  +===============+========+==========+===============+
  | 8.50          | VAT    | 20.00    | 1.70          |
  +---------------+--------+----------+---------------+
:Supplier Name: Clachan
:Supplier Company Registrations: Type: VAT NUMBER, Value: 232153895
                                 Type: VAT NUMBER, Value: 232153895
:Supplier Address: 34 Kingley Street W1B 50H
:Supplier Phone Number: 02074940834
:Receipt Number: 54/7500
:Line Items:
  +--------------------------------------+----------+--------------+------------+
  | Description                          | Quantity | Total Amount | Unit Price |
  +======================================+==========+==============+============+
  | Meantime Pale                        | 2.00     | 10.20        |            |
  +--------------------------------------+----------+--------------+------------+

Field Types

Standard Fields

These fields are generic and used in several products.

BaseField

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, always 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.

AmountField

The amount field AmountField only has one constraint: its value is an optional ?float.

ClassificationField

The classification field ClassificationField does not implement all the basic BaseField attributes. It only implements value, confidence and pageId.

Note: a classification field's value is always a string`.

CompanyRegistrationField

Aside from the basic BaseField attributes, the company registration field CompanyRegistrationField also implements the following:

  • type (string): the type of company.

DateField

Aside from the basic BaseField attributes, the date field DateField also implements the following:

  • dateObject (date): an accessible representation of the value as a php object. Can be null.

LocaleField

The locale field LocaleField only implements the value, confidence and pageId base BaseField attributes, but it comes with its own:

  • language (string): ISO 639-1 language code (e.g.: en for English). Can be null.
  • country (string): ISO 3166-1 alpha-2 or ISO 3166-1 alpha-3 code for countries (e.g.: GRB or GB for "Great Britain"). Can be null.
  • currency (string): ISO 4217 code for currencies (e.g.: USD for "US Dollars"). Can be null.

StringField

The text field StringField implements the following:

  • value (string): represents the value of the field as a string.
  • rawValue (string): the value of the string as it appears on the document.

TaxesField

Tax

Aside from the basic BaseField attributes, the tax field TaxField also implements the following:

  • rate (float): the tax rate applied to an item expressed as a percentage. Can be null.
  • code (string): tax code (or equivalent, depending on the origin of the document). Can be null.
  • base (float): base amount used for the tax. Can be null.

Note: currently TaxField is not used on its own, and is accessed through a parent Taxes object, a list-like structure.

Taxes (Array)

The Taxes field represents a list-like collection of TaxField objects. As it is the representation of several objects, it has access to a custom __toString method that can render a TaxField object as a table line.

Specific Fields

Fields which are specific to this product; they are not used in any other product.

Line Items Field

List of line item details.

A ReceiptV5LineItem implements the following attributes:

  • description (string): The item description.
  • quantity (float): The item quantity.
  • totalAmount (float): The item total amount.
  • unitPrice (float): The item unit price.

Attributes

The following fields are extracted for Receipt V5:

Purchase Category

category : The purchase category among predefined classes.

Possible values include:

  • toll
  • food
  • parking
  • transport
  • accommodation
  • gasoline
  • telecom
  • miscellaneous
echo $result->document->inference->prediction->category->value;

Purchase Date

date : The date the purchase was made.

echo $result->document->inference->prediction->date->value;

Document Type

documentType : One of: 'CREDIT CARD RECEIPT', 'EXPENSE RECEIPT'.

Possible values include:

  • expense_receipt
  • credit_card_receipt
echo $result->document->inference->prediction->documentType->value;

Line Items

lineItems ([ReceiptV5LineItem]): List of line item details.

foreach ($result->document->inference->prediction->lineItems as $lineItemsElem)
{
    echo $lineItemsElem->value;
}

Expense Locale

locale : The locale detected on the document.

echo $result->document->inference->prediction->locale->value;

Receipt Number

receiptNumber : The receipt number or identifier.

echo $result->document->inference->prediction->receiptNumber->value;

Purchase Subcategory

subcategory : The purchase subcategory among predefined classes for transport and food.

Possible values include:

  • plane
  • taxi
  • train
  • restaurant
  • shopping
echo $result->document->inference->prediction->subcategory->value;

Supplier Address

supplierAddress : The address of the supplier or merchant.

echo $result->document->inference->prediction->supplierAddress->value;

Supplier Company Registrations

supplierCompanyRegistrations : List of company registrations associated to the supplier.

foreach ($result->document->inference->prediction->supplierCompanyRegistrations as $supplierCompanyRegistrationsElem)
{
    echo $supplierCompanyRegistrationsElem->value;
}

Supplier Name

supplierName : The name of the supplier or merchant.

echo $result->document->inference->prediction->supplierName->value;

Supplier Phone Number

supplierPhoneNumber : The phone number of the supplier or merchant.

echo $result->document->inference->prediction->supplierPhoneNumber->value;

Taxes

taxes : List of tax lines information.

foreach ($result->document->inference->prediction->taxes as $taxesElem)
{
    echo $taxesElem->value;
}

Purchase Time

time : The time the purchase was made.

echo $result->document->inference->prediction->time->value;

Tip and Gratuity

tip : The total amount of tip and gratuity.

echo $result->document->inference->prediction->tip->value;

Total Amount

totalAmount : The total amount paid: includes taxes, discounts, fees, tips, and gratuity.

echo $result->document->inference->prediction->totalAmount->value;

Total Net

totalNet : The net amount paid: does not include taxes, fees, and discounts.

echo $result->document->inference->prediction->totalNet->value;

Total Tax

totalTax : The total amount of taxes.

echo $result->document->inference->prediction->totalTax->value;

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Updated about 2 months ago