PHP code example of petrknap / data-signer

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

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

    

petrknap / data-signer example snippets

use PetrKnap\DataSigner\Some;

$signer = new Some\DataSigner();
$data = 'some data';
$signature = $signer->sign($data);
if ($signer->verify($data, $signature)) {
    echo 'Data was successfully verified by signature.';
}

use PetrKnap\DataSigner\Some;

$signer = new Some\DataSigner();
$data = 'some data';
$signature = $signer->withDomain('password_reset')->sign($data);
if (!$signer->withDomain('cookies')->verify($data, $signature)) {
    echo 'You can not use signature generated for `password_reset` in `cookies`.';
}

use PetrKnap\DataSigner\Some;

$signer = new Some\DataSigner();
$data = 'some data';
$signature = $signer->sign($data, expiresAt: new DateTimeImmutable('2025-04-05 09:40:53+02:00'));
if (!$signer->verify($data, $signature)) {
    echo 'You can not use signature after its expiration.';
}

use PetrKnap\DataSigner\Some;

$apiClient = new class (new Some\DataSigner()) {
    public function __construct(private readonly Some\DataSigner $dataSigner) {}
    public function put(Some\DataTransferObject $payload): void {
        $request = [
            'payload' => $payload,
            'signature' => (string) $this->dataSigner->sign($payload)->encode()->base64(),
        ];
        echo json_encode($request);  # here should be the API call
    }
};
$apiClient->put(new Some\DataTransferObject(
    property: 'some value',
));

use PetrKnap\Binary\Binary;
use PetrKnap\DataSigner\Some;

$signer = new Some\DataSigner();

$passwordResetToken = (string) $signer->withDomain('password_reset')->sign(
    data: 'some_user',
    expiresAt: (new DateTimeImmutable())->modify('+3 hours'),
)->encode(withData: true)->zlib()->base64(urlSafe: true);

$verifiedUserIdentifier = $signer->withDomain('password_reset')->verified(
    (string) Binary::decode($passwordResetToken)->base64()->zlib(),
)->orElseThrow();
echo "Verified user identifier is `{$verifiedUserIdentifier}`.";