Download the PHP package google/recaptcha without Composer

On this page you can find all versions of the php package google/recaptcha. It is possible to download/install these versions without Composer. Possible dependencies are resolved automatically.


After the download, you have to make one include require_once('vendor/autoload.php');. After that you have to import the classes with use statements.

If you use only one package a project is not needed. But if you use more then one package, without a project it is not possible to import the classes with use statements.

In general, it is recommended to use always a project to download your libraries. In an application normally there is more than one library needed.
Some PHP packages are not free to download and because of that hosted in private repositories. In this case some credentials are needed to access such packages. Please use the auth.json textarea to insert credentials, if a package is coming from a private repository. You can look here for more information.

  • Some hosting areas are not accessible by a terminal or SSH. Then it is not possible to use Composer.
  • To use Composer is sometimes complicated. Especially for beginners.
  • Composer needs much resources. Sometimes they are not available on a simple webspace.
  • If you are using private repositories you don't need to share your credentials. You can set up everything on our site and then you provide a simple download link to your team member.
  • Simplify your Composer build process. Use our own command line tool to download the vendor folder as binary. This makes your build process faster and you don't need to expose your credentials for private repositories.
Please rate this library. Is it a good library?
Rate from 1 - 5
Rated 4.00 based on 1 reviews

Informations about the package recaptcha

reCAPTCHA PHP client library

Build Status Coverage Status Latest Stable Version Total Downloads

reCAPTCHA is a free CAPTCHA service that protects websites from spam and abuse. This is a PHP library that wraps up the server-side verification step required to process responses from the reCAPTCHA service. This client supports both v2 and v3.


Composer (recommended)

Use Composer to install this library from Packagist: google/recaptcha

Run the following command from your project directory to add the dependency:

Alternatively, add the dependency directly to your composer.json file:

Support for earlier versions of PHP

The 1.3 release moves to PHP 8 and up. For earlier versions, you will need to stay with the 1.2 releases.

Direct download

Download the ZIP file and extract into your project. An autoloader script is provided in src/autoload.php which you can require into your script. For example:

The classes in the project are structured according to the PSR-4 standard, so you can also use your own autoloader or require the needed files directly in your code.


First obtain the appropriate keys for the type of reCAPTCHA you wish to integrate for v2 at or v3 at

Then follow the integration guide on the developer site to add the reCAPTCHA functionality into your frontend.

This library comes in when you need to verify the user's response. On the PHP side you need the response from the reCAPTCHA service and secret key from your credentials. Instantiate the ReCaptcha class with your secret key, specify any additional validation rules, and then call verify() with the reCAPTCHA response (usually in $_POST['g-recaptcha-response'] or the response from grecaptcha.execute() in JS which is in $gRecaptchaResponse in the example) and user's IP address. For example:

The following methods are available:

Each of the set*() methods return the ReCaptcha instance so you can chain them together. For example:

You can find the constants for the libraries error codes in the ReCaptcha class constants, e.g. ReCaptcha::E_HOSTNAME_MISMATCH

For more details on usage and structure, see ARCHITECTURE.


You can see examples of each reCAPTCHA type in examples/. You can run the examples locally by using the Composer script:

This makes use of the in-built PHP dev server to host the examples at http://localhost:8080/

These are also hosted on Google AppEngine Flexible environment at This is configured by app.yaml which you can also use to deploy to your own AppEngine project.


No one ever has enough engineers, so we're very happy to accept contributions via Pull Requests. For details, see CONTRIBUTING

All versions of recaptcha with dependencies

PHP Build Version
Package Version
Requires php Version >=8
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

The package google/recaptcha contains the following files

Loading the files please wait ....