PHP+Alibaba Cloud OCR: Create an excellent application for image text recognition

PHP Alibaba Cloud OCR: Creating an excellent application for image and text recognition

In recent years, with the rapid development of artificial intelligence technology, image and text recognition (OCR) has become a popular technology in many application fields. OCR technology can accurately identify text in images, providing great convenience for image processing, information extraction and other applications. In this article, we will introduce how to use PHP and Alibaba Cloud OCR service to create a simple and excellent image text recognition application.

1. Register an Alibaba Cloud account and activate the OCR service
To use the Alibaba Cloud OCR service, you first need to register an Alibaba Cloud account and activate the OCR service. Find the OCR service on the Alibaba Cloud official website, fill in the application information according to the prompts, and complete the payment to activate the OCR service. After activation, we will get a pair of Access Key ID and Access Key Secret, which will be the credential information we need to call the OCR service API.

2. Install and configure the PHP development environment
Before starting to write OCR applications, we need to install PHP and configure the corresponding development environment. You can download the latest version of PHP from the PHP official website and install it according to the installation instructions. After the installation is complete, you need to configure the relevant environment variables of PHP and ensure that PHP can run normally.

3. Use Composer to install Alibaba Cloud SDK
Alibaba Cloud provides a PHP version of the SDK, which we can use Composer to install. First, create a composer.json file in the root directory of the project with the following content:

{

"require": {
    "aliyun/aliyun-ocr-sdk": "6.*"
}

}

Then, use the command line tool to enter the current project directory Next, execute the following command to install the SDK:

composer install

After the installation is completed, we can load the class files in the SDK by introducing the autoload.php file into the project.

4. Write image text recognition application code
Next, we will write code to implement the image text recognition function. First, we need to create an OCR Client object by configuring Access Key ID and Access Key Secret. The code example is as follows:

use AlibabaCloudClientAlibabaCloud;
use AlibabaCloudSDKCredentialsCredentials;
use AlibabaCloudSDKOcrOcr;

require_once 'vendor/autoload.php';

$accessKeyId = 'your-access-key-id';
$accessKeySecret = 'your-access-key-secret';

$credentials = new Credentials($accessKeyId, $accessKeySecret) ;

AlibabaCloud::accessKeyClient($credentials)

->regionId('cn-shanghai')
->asDefaultClient();

$ocrClient = new Ocr();
?>

After creating the OCR Client object, we You can use the OCR Client object to call the relevant API interface for image text recognition. The following is a simple example that reads a local image file and calls the OCR text recognition interface to extract the text in the image:

use AlibabaCloudSDKOcrOcrRequestRecognizeBusinessCardRequest;

$ file = 'your-image-file.jpg';

$recognizeBusinessCardRequest = new RecognizeBusinessCardRequest();

$recognizeBusinessCardRequest->uploadFile($file);

$ response = $ocrClient->recognizeBusinessCard()

->connectTimeout(60)
->timeout(65)
->withRecognizeBusinessCardRequest($recognizeBusinessCardRequest)
->request();

print_r($response->toArray());
?>

In this sample code, we use Alibaba The RecognizeBusinessCard interface of the cloud OCR service, which can recognize business card images. Before calling the interface, we need to provide a local image file, and then upload the file to the OCR service for recognition. Finally, we can obtain the recognition results through the $response->toArray() method.

5. Run and test the application
After completing the above code writing, you can use PHP's built-in server to run our application. Enter the project root directory on the command line and execute the following command to start the server:

php -S localhost:8000

Then, visit http://localhost:8000 in the browser, If everything goes well, you should be able to see the results of image text recognition.

6. Summary
In this article, we use PHP and Alibaba Cloud OCR service to quickly build an excellent application for image text recognition. By calling the API interface of the OCR service, we can easily implement the image text recognition function. I hope this article will be helpful to developers who are new to OCR technology and will play a good role in practical applications.

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