This simple command-line application demonstrates how to invoke Google Vision API from PHP.

1. Enable APIs - Enable the Vision API and create a new project or select an existing project.
2. Download The Credentials - Click "Go to credentials" after enabling the APIs. Click "New Credentials" and select "Service Account Key". Create a new service account, use the JSON key type, and select "Create". Once downloaded, set the environment variable GOOGLE_APPLICATION_CREDENTIALS to the path of the JSON key that was downloaded.
3. Clone the repo and cd into this directory

    $ git clone https://github.com/GoogleCloudPlatform/php-docs-samples
    $ cd php-docs-samples/vision

4. Install dependencies via Composer. Run php composer.phar install (if composer is installed locally) or composer install (if composer is installed globally).
5. For a basic demonstration of the Cloud Vision API, run php quickstart.php.
6. Execute the snippets in the src/ directory by running php src/SNIPPET_NAME.php. The usage will print for each if no arguments are provided:

   $ php src/detext_face.php
   Usage: php src/detext_face.php <PATH>
   
   $ php src/detect_face.php 'path/to/your/image.jpg'

This sample uses the Cloud Vision Client Library for PHP. You can read the documentation for more details on API usage and use GitHub to browse the source and report issues.

If you get the following error, set the environment variable GCLOUD_PROJECT to your project ID:

[Google\Cloud\Core\Exception\GoogleException]
No project ID was provided, and we were unable to detect a default project ID.

If you have not set a timezone you may get an error from php. This can be resolved by:

1. Finding where the php.ini is stored by running php -i | grep 'Configuration File'
2. Finding out your timezone from the list on this page: http://php.net/manual/en/timezones.php
3. Editing the php.ini file (or creating one if it doesn't exist)
4. Adding the timezone to the php.ini file e.g., adding the following line: date.timezone = "America/Los_Angeles"

• See CONTRIBUTING.md

• See LICENSE