Rekognition PHP - C&M

Simple to use PHP library for AWS Rekognition.

Rekognition PHP allows to detect in images:

• Labels (using DetectLabels)

Detects instances of real-world entities within an image (JPEG or PNG) provided as input. This includes objects like flower, tree, and table; events like wedding, graduation, and birthday party; and concepts like landscape, evening, and nature.

• Text (using DetectText)

Detects text in the input image and converts it into machine-readable text.

Installation

composer require clickandmortar/rekognition-php

Configuration

Configure credentials

Before using rekognition-php, set credentials to make requests to Amazon Web Services.

Usage

The following code will allow to retrieve the output from previous picture:

<?php

use ClickAndMortar\Rekognition\Service\DetectService;

require 'vendor/autoload.php';

$detectService = new DetectService();

$url = 'https://raw.githubusercontent.com/ClickAndMortar/rekognition-php/master/img/tshirt.png';
$rekognitionImage = $detectService->detectFromUrl($url);
$minimumConfidence = 80;

print 'Labels:' . PHP_EOL;
foreach ($rekognitionImage->getLabels($minimumConfidence) as $label) {
    print $label;
}

print 'Texts:' . PHP_EOL;
foreach ($rekognitionImage->getTexts($minimumConfidence) as $text) {
    print $text;
}

Output will be the same if:

$url = 'https://raw.githubusercontent.com/ClickAndMortar/rekognition-php/master/img/tshirt.png';
$rekognitionImage = $detectService->detectFromUrl($url);

is replaced with:

$filename = 'img/tshirt.png';
$handle = fopen($filename, 'r');
$image = fread($handle, filesize($filename));
fclose($handle);

$rekognitionImage = $detectService->detect($image);

or

$filename = 'img/tshirt.png';
$handle = fopen($filename, 'r');
$image = fread($handle, filesize($filename));
fclose($handle);

$base64image = base64_encode($image);
$rekognitionImage = $detectService->detectFromBase64($base64image);

Advanced configuration (Optional)

Configure Rekognition client options

Configuring Rekognition client options is optional as default values will be used if none are set with the following methods.

region and version are configurable using environment variables AWS_REGION and AWS_REKOGNITION_VERSION.

It is also possible to pass this options to DetectService constructor:

$detectService = new DetectService([
    'region' => 'eu-west-1',
    'version' => '2016-06-27',
]);

Tests

Run tests

vendor/bin/phpunit

Docker

Installation

docker run --rm -it -v $PWD:/app composer install

Run

Create main.php with code from Usage.

docker run --rm -it -e AWS_ACCESS_KEY_ID="$AWS_ACCESS_KEY_ID" -e AWS_SECRET_ACCESS_KEY="$AWS_SECRET_ACCESS_KEY" -v "$PWD":/app -w /app php:7.1-cli php main.php

Run tests

docker run --rm -it -e AWS_ACCESS_KEY_ID="$AWS_ACCESS_KEY_ID" -e AWS_SECRET_ACCESS_KEY="$AWS_SECRET_ACCESS_KEY" -v "$PWD":/app -w /app php:7.1-cli vendor/bin/phpunit