PHP Classes

Lightweight PHP API Key Authentication: Store and validate user API keys in files

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apikeys 1.0.0Public Domain7PHP 5, User Management, Web services, S...
Description 

Author

Ray Paseur

This package can store and validate user API keys in files.

It can take a given API key eventually taken from a API call request parameters and checks it against a list of allowed API keys retrieved from a given file that stores allowed users API keys.

The class can also add or update an API key for a given user in a the same file used from validating API keys.

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Example

<?php // demo/classes/demo_APIKey.php
/**
 * Demonstrate Classes to Generate / Validate an API Key PHP7+
 *
 * https://www.phpclasses.org/recommend/854-A-random-API-key-generator-to-server-as-access-restriction-to-AP.html
 */
error_reporting(E_ALL);

require_once('class_APIKey.php');
require_once('class_APIKeyValidation.php');
require_once('class_APIKeyException.php');

echo '<pre>';


// Show how to use the class with Success to validate the key
$apikey = '3c98ea3c99806fde3aa810c9f0f56e0d'; // Came from URL or other request data
try {
    $name = APIKeyValidation::validate($apikey);
    echo PHP_EOL . "API Key $apikey belongs to $name";
}
catch(APIKeyException $e) {
    echo PHP_EOL . $e->getMessage();
    echo PHP_EOL . $e->getCode() . " can be used as the HTTP code";
    echo PHP_EOL;
}


// Show how to use the class with Failure to validate the key
$apikey = 'This-Bogus-API-Key';
try {
    $name = APIKeyValidation::validate($apikey);
    echo PHP_EOL . "API Key $apikey belongs to $name";
}
catch(APIKeyException $e) {
    echo PHP_EOL . $e->getMessage();
    echo PHP_EOL . $e->getCode() . " can be used as the HTTP code";
    echo PHP_EOL;
}


// Show how to generate a new API key
$new = APIKeyValidation::storeKey('New-User');
echo PHP_EOL . "Look for '$new' in this list:";
echo PHP_EOL;
readfile( APIKeyValidation::APIKEYFILE );

Details

readme for class_APIKey.php

This set of classes is a response to a request at this URL:
https://www.phpclasses.org/recommend/854-A-random-API-key-generator-to-server-as-access-restriction-to-AP.html

There are 3 classes in the set:

Abstract class APIKey
This is the base class that the other classes extend.  It has one method, generate(),
which creates a unique API key.  It also defines two other methods.  Method validate()
test a given API key for validity and returns the name of the person it belongs to, or
throws APIKeyException.  Method storeKey() takes the name of a person, calls generate()
to get a new API key, and stores the name:key combination in a place that validate()
can find.

Class APIKeyValidation
This is the concrete class that provides the two abstract methods called for by APIKey.
When validate() cannot associate an API key with a user name it throws APIKeyException.

Class APIKeyException
Extends Exception and provides a message and an HTTP code.

There are 2 demonstration files in hte set:

Script demo_APIKey.php exercises the classes.
Text File demo_APIKey.txt simulates a database or flat file of valid API keys.

Todo:
Add a method to invalidate an API key.

  Files folder image Files (6)  
File Role Description
Plain text file class_APIKey.php Class Abstract Class
Plain text file class_APIKeyException.php Class Exception Handler
Plain text file class_APIKeyValidation.php Class Extends Abstract Class
Accessible without login Plain text file demo_APIKey.php Example Demonstration Script
Accessible without login Plain text file demo_APIKey.txt Data Test File for Demo
Accessible without login Plain text file readme_APIKey.txt Doc. Readme text file

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