PHP code example of nextphp / jwt

1. Go to this page and download the library: Download nextphp/jwt library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

nextphp / jwt example snippets


// without composer: quire 'vendor/autoload.php';

use LeanPHP\JWT\NGJWT;

// Initialize the JWT handler with a secret key
$secret = 'your_secret_key';
$jwt = new NGJWT($secret);

// Example payload
$payload = [
    'user_id' => 1,
    'username' => 'john.doe',
    'email' => '[email protected]',
    'role' => 'admin',
    'iat' => time(),
    'exp' => time() + 3600 // 1 hour expiration
];

// Generate a JWT
$token = $jwt->generate($payload);
echo "Generated Token: " . $token . "\n";


// Example headers containing the JWT
$headers = [
    'Authorization' => 'Bearer ' . $token
];

// Authenticate the user using the token from the headers
try {
    if ($jwt->authenticate($headers)) {
        $user = NGJWT::getUser();
        echo "Authenticated User: \n";
        print_r($user);
    }
} catch (\Exception $e) {
    echo "Authentication failed: " . $e->getMessage() . "\n";
}


// Decode the token directly
try {
    $decoded = $jwt->decode($token);
    echo "Decoded Token: \n";
    print_r($decoded);
} catch (\Exception $e) {
    echo "Decoding failed: " . $e->getMessage() . "\n";
}




use leanphp\jwt\NGJWT;

// Initialize the JWT handler with a secret key
$secret = 'your_secret_key';
$jwt = new NGJWT($secret);

// Example payload
$payload = [
    'user_id' => 1,
    'username' => 'john.doe',
    'email' => '[email protected]',
    'role' => 'admin',
    'iat' => time(),
    'exp' => time() + 3600 // 1 hour expiration
];

// Generate a JWT
$token = $jwt->generate($payload);
echo "Generated Token: " . $token . "\n\n";

// Simulate storing the token in a database
echo "Storing the token in the database...\n\n";
// Example of database storage logic (not implemented here)
// storeTokenInDatabase($user_id, $token);

// Example headers containing the JWT
$headers = [
    'Authorization' => 'Bearer ' . $token
];

// Authenticate the user using the token from the headers
echo "Authenticating User...\n";
try {
    if ($jwt->authenticate($headers)) {
        $user = NGJWT::getUser();
        echo "Authenticated User: \n";
        print_r($user);
        echo "\n";
    }
} catch (\Exception $e) {
    echo "Authentication failed: " . $e->getMessage() . "\n";
}

// Decode the token directly
echo "Decoding the Token...\n";
try {
    $decoded = $jwt->decode($token);
    echo "Decoded Token: \n";
    print_r($decoded);
    echo "\n";
} catch (\Exception $e) {
    echo "Decoding failed: " . $e->getMessage() . "\n";
}

// Example output separation
echo "\n--------------------------\n";
echo "Example 1: Token Generation\n";
echo "Generated Token: " . $token . "\n";

echo "\n--------------------------\n";
echo "Example 2: Token Authentication\n";
try {
    if ($jwt->authenticate($headers)) {
        $user = NGJWT::getUser();
        echo "Authenticated User: \n";
        print_r($user);
        echo "\n";
    }
} catch (\Exception $e) {
    echo "Authentication failed: " . $e->getMessage() . "\n";
}

echo "\n--------------------------\n";
echo "Example 3: Token Decoding\n";
try {
    $decoded = $jwt->decode($token);
    echo "Decoded Token: \n";
    print_r($decoded);
    echo "\n";
} catch (\Exception $e) {
    echo "Decoding failed: " . $e->getMessage() . "\n";
}