hash - PHP code example

How to Encrypt Your Data With the PHP Function Hash

If your website handles passwords, you need to make sure those passwords are safe. Password hacks can be devastating and can have a long-term negative impact on traffic, revenue, and your reputation. The good news is that protecting your site from hackers is not hard to do. By hashing your passwords, you can ensure that any unauthorized attempt to access your site will be ineffective and will result in nothing more than an annoyance for the hacker.

This article covers various methods of encrypting data through the use of multiple hash functions of PHP. This is a very useful technique to protect your data from hacker attacks and will also prevent any changes in the encrypted data.

PHP supports a variety of hashing algorithms with the crypt() function. You can use different algorithms by specifying them in the hash_algorithm argument. There is a large list of available algorithms and the most important ones are md5, sha256, and SHA-1.

The crypt() function allows you to set a salt for the hash, which is an extra piece of information that is added to the original data to produce the hash. This helps to secure the hash against a dictionary attack. The salt should contain only symbols and numbers that are not easily guessed.

In addition to using a salt, you can add additional security by adding a random value to the hash. You can do this by passing a random number to the hash_algorithm argument. If you want to use the bcrypt algorithm with crypt(), you can also specify a cost parameter. The higher the cost, the more processing power is required to generate a hash.

hash example

foreach ($catalogueMetadata as $key => $value) {
                $xliffProp = $xliffPropGroup->appendChild($dom->createElement('prop'));
                $xliffProp->setAttribute('prop-type', $key);
                $xliffProp->appendChild($dom->createTextNode($value));
            }
        }

        $xliffBody = $xliffFile->appendChild($dom->createElement('body'));
        foreach ($messages->all($domain) as $source => $target) {
            $translation = $dom->createElement('trans-unit');

            $translation->setAttribute('id', strtr(substr(base64_encode(hash('sha256', $source, true)), 0, 7), '/+', '._'));
            $translation->setAttribute('resname', $source);

            $s = $translation->appendChild($dom->createElement('source'));
            $s->appendChild($dom->createTextNode($source));

            // Does the target contain characters requiring a CDATA section?             $text = 1 === preg_match('/[&<>]/', $target) ? $dom->createCDATASection($target) : $dom->createTextNode($target);

            $targetElement = $dom->createElement('target');
            $metadata = $messages->getMetadata($source, $domain);
            if ($this->hasMetadataArrayInfo('target-attributes', $metadata)) {

if ($autowireAttributes) {
                        $attribute = $autowireAttributes[0]->newInstance();
                        $value = $parameterBag->resolveValue($attribute->value);

                        if ($attribute instanceof AutowireCallable) {
                            $value = $attribute->buildDefinition($value, $type, $p);
                        }

                        if ($value instanceof Reference) {
                            $args[$p->name] = $type ? new TypedReference($value, $type, $invalidBehavior, $p->name) : new Reference($value, $invalidBehavior);
                        } else {
                            $args[$p->name] = new Reference('.value.'.$container->hash($value));
                            $container->register((string) $args[$p->name], 'mixed')
                                ->setFactory('current')
                                ->addArgument([$value]);
                        }

                        continue;
                    }

                    if ($type && !$p->isOptional() && !$p->allowsNull() && !class_exists($type) && !interface_exists($type, false)) {
                        $message = sprintf('Cannot determine controller argument for "%s::%s()": the $%s argument is type-hinted with the non-existent class or interface: "%s".', $class, $r->name, $p->name, $type);

$lastModified = null;
        $etag = null;

        /** @var Cache[] $attributes */
        foreach ($attributes as $cache) {
            if (null !== $cache->lastModified) {
                $lastModified = $this->getExpressionLanguage()->evaluate($cache->lastModified, array_merge($request->attributes->all(), $event->getNamedArguments()));
                ($response ??= new Response())->setLastModified($lastModified);
            }

            if (null !== $cache->etag) {
                $etag = hash('sha256', $this->getExpressionLanguage()->evaluate($cache->etag, array_merge($request->attributes->all(), $event->getNamedArguments())));
                ($response ??= new Response())->setEtag($etag);
            }
        }

        if ($response?->isNotModified($request)) {
            $event->setController(static fn () => $response);
            $event->stopPropagation();

            return;
        }

$services[] = (string) $value;
        }

        return $services;
    }

    /** * Computes a reasonably unique hash of a serializable value. */
    public static function hash(mixed $value): string
    {
        $hash = substr(base64_encode(hash('sha256', serialize($value), true)), 0, 7);

        return str_replace(['/', '+'], ['.', '_'], $hash);
    }

    protected function getEnv(string $name): mixed
    {
        $value = parent::getEnv($name);
        $bag = $this->getParameterBag();

        if (!\is_string($value) || !$bag instanceof EnvPlaceholderParameterBag) {
            return $value;
        }

// Prepare the view with the information we have, but only if we were     // passed arguments, as they may have been set previously.     if ($args) {
      $this->setArguments($args);
    }

    // Let modules modify the view just prior to executing it.     \Drupal::moduleHandler()->invokeAll('views_pre_view', [$this, $display_id, &$this->args]);

    // Allow hook_views_pre_view() to set the dom_id, then ensure it is set.     $this->dom_id = !empty($this->dom_id) ? $this->dom_id : hash('sha256', $this->storage->id() . REQUEST_TIME . mt_rand());

    // Allow the display handler to set up for execution     $this->display_handler->preExecute();
  }

  /** * Unsets the current view, mostly. */
  public function postExecute() {
    // unset current view so we can be properly destructed later on.     // Return the previous value in case we're an attachment.

'build_info' => $build_info,
      ];
      // @todo https://www.drupal.org/node/2433591 might solve it to not require       // the pager information here.       $key_data['pager'] = [
        'page' => $this->view->getCurrentPage(),
        'items_per_page' => $this->view->getItemsPerPage(),
        'offset' => $this->view->getOffset(),
      ];
      $key_data += \Drupal::service('cache_contexts_manager')->convertTokensToKeys($this->displayHandler->getCacheMetadata()->getCacheContexts())->getKeys();

      $this->resultsKey = $this->view->storage->id() . ':' . $this->displayHandler->display['id'] . ':results:' . hash('sha256', serialize($key_data));
    }

    return $this->resultsKey;
  }

  /** * Gets an array of cache tags for the current view. * * @return string[] * An array of cache tags based on the current view. */

foreach ($arguments as $name => $node) {
            if (!\is_int($name)) {
                return true;
            }
        }

        return false;
    }

    private function getVarName(): string
    {
        return sprintf('__internal_%s', hash('sha256', uniqid(mt_rand(), true), false));
    }
}

  protected function itemHash(array $items, $delta, array $properties) {
    $values = [];

    if (isset($items[$delta])) {
      foreach ($properties as $property) {
        if (!empty($items[$delta][$property])) {
          $value = $items[$delta][$property];
          // String and integer values are by far the most common item values,           // thus we special-case them to improve performance.           $values[] = is_string($value) || is_int($value) ? $value : hash('sha256', serialize($value));
        }
        else {
          // Explicitly track also empty values.           $values[] = '';
        }
      }
    }

    return implode('.', $values);
  }

}

final class CliContextProvider implements ContextProviderInterface
{
    public function getContext(): ?array
    {
        if ('cli' !== \PHP_SAPI) {
            return null;
        }

        return [
            'command_line' => $commandLine = implode(' ', $_SERVER['argv'] ?? []),
            'identifier' => hash('crc32b', $commandLine.$_SERVER['REQUEST_TIME_FLOAT']),
        ];
    }
}

foreach ($formDataPart->getPreparedHeaders()->all() as $header) {
                $options['headers'][] = $header->toString();
            }

            $options['body'] = $formDataPart->bodyToIterable();

            break;
        }

        $oauth = [
            'oauth_consumer_key' => $this->apiKey,
            'oauth_nonce' => self::$nonce = hash('xxh128', self::$nonce ??= random_bytes(16)),
            'oauth_signature_method' => 'HMAC-SHA1',
            'oauth_timestamp' => time(),
            'oauth_token' => $this->accessToken,
            'oauth_version' => '1.0',
        ];

        $sign = $oauth + ($options['query'] ?? []) + (\is_array($options['body'] ?? null) ? $options['body'] : []);
        ksort($sign);

        $oauth['oauth_signature'] = base64_encode(hash_hmac(
            'sha1',

    public static function castOpensslX509($h, array $a, Stub $stub, bool $isNested)
    {
        $stub->cut = -1;
        $info = openssl_x509_parse($h, false);

        $pin = openssl_pkey_get_public($h);
        $pin = openssl_pkey_get_details($pin)['key'];
        $pin = \array_slice(explode("\n", $pin), 1, -2);
        $pin = base64_decode(implode('', $pin));
        $pin = base64_encode(hash('sha256', $pin, true));

        $a += [
            'subject' => new EnumStub(array_intersect_key($info['subject'], ['organizationName' => true, 'commonName' => true])),
            'issuer' => new EnumStub(array_intersect_key($info['issuer'], ['organizationName' => true, 'commonName' => true])),
            'expiry' => new ConstStub(date(\DateTimeInterface::ISO8601, $info['validTo_time_t']), $info['validTo_time_t']),
            'fingerprint' => new EnumStub([
                'md5' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h, 'md5')), 2, ':', true)),
                'sha1' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h, 'sha1')), 2, ':', true)),
                'sha256' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h, 'sha256')), 2, ':', true)),
                'pin-sha256' => new ConstStub($pin),
            ]),
        ];

throw new RuntimeException(sprintf('Invalid handler service "%s": class or interface "%s" '.$messageLocation.' not found.', $serviceId, $message));
                    }

                    if (!$r->hasMethod($method)) {
                        throw new RuntimeException(sprintf('Invalid handler service "%s": method "%s::%s()" does not exist.', $serviceId, $r->getName(), $method));
                    }

                    if ('__invoke' !== $method) {
                        $wrapperDefinition = (new Definition('Closure'))->addArgument([new Reference($serviceId), $method])->setFactory('Closure::fromCallable');

                        $definitions[$definitionId = '.messenger.method_on_object_wrapper.'.ContainerBuilder::hash($message.':'.$priority.':'.$serviceId.':'.$method)] = $wrapperDefinition;
                    } else {
                        $definitionId = $serviceId;
                    }

                    $handlerToOriginalServiceIdMapping[$definitionId] = $serviceId;

                    foreach ($buses as $handlerBus) {
                        $handlersByBusAndMessage[$handlerBus][$message][$priority][] = [$definitionId, $options];
                    }
                }

$code .= $this->endClass();

            if ($this->inlineFactories && $proxyClasses) {
                $files['proxy-classes.php'] = "<?php\n\n";

                foreach ($proxyClasses as $c) {
                    $files['proxy-classes.php'] .= $c;
                }
            }

            $files[$options['class'].'.php'] = $code;
            $hash = ucfirst(strtr(ContainerBuilder::hash($files), '._', 'xx'));
            $code = [];

            foreach ($files as $file => $c) {
                $code["Container{$hash}/{$file}"] = substr_replace($c, "<?php\n\nnamespace Container{$hash};\n", 0, 6);

                if (isset($preloadedFiles[$file])) {
                    $preloadedFiles[$file] = "Container{$hash}/{$file}";
                }
            }
            $namespaceLine = $this->namespace ? "\nnamespace {$this->namespace};\n" : '';
            $time = $options['build_time'];

$this->assertTrue($container->hasDefinition(
            $factoryChildMiddlewareArgs1Id = $fooBusId.'.middleware.middleware_with_factory'
        ));
        $this->assertEquals(
            ['foo', 'bar'],
            $container->getDefinition($factoryChildMiddlewareArgs1Id)->getArguments(),
            'parent default argument is overridden, and next ones appended'
        );

        $this->assertTrue($container->hasDefinition(
            $factoryChildMiddlewareArgs2Id = $fooBusId.'.middleware.middleware_with_factory.'.ContainerBuilder::hash($factoryChildMiddlewareArgs2)
        ));
        $this->assertEquals(
            ['baz'],
            $container->getDefinition($factoryChildMiddlewareArgs2Id)->getArguments(),
            'parent default argument is overridden, and next ones appended'
        );

        $this->assertTrue($container->hasDefinition(
            $factoryWithDefaultChildMiddlewareId = $fooBusId.'.middleware.middleware_with_factory_using_default'
        ));
        $this->assertEquals(
            [

  public static function keyFromQuery(SelectInterface $query) {
    @trigger_error(__METHOD__ . ' is deprecated in drupal:10.1.0 and is removed from drupal:11.0.0. No replacement provided. https://www.drupal.org/node/3322044', E_USER_DEPRECATED);
    $query->preExecute();
    $keys = [(string) $query, $query->getArguments()];
    return hash('sha256', serialize($keys));
  }

}