Update to PHP 8

.gitignore

@@ -4,4 +4,5 @@ composer.lock
 vendor/
 tmp/
 .vs/
-.vscode/
+.vscode/
+.phpunit*

.scrutinizer.yml

@@ -0,0 +1,10 @@
+filter:
+    paths: ["src/*"]
+tools:
+    external_code_coverage: true
+    php_code_coverage: true
+    php_sim: true
+    php_mess_detector: true
+    php_pdepend: true
+    php_analyzer: true
+    php_cpd: true

README.md

@@ -4,10 +4,17 @@ PHP Cache library with namespace, filesystem and (p)redis implementations.
 ### Requirements
 Requires PHP 7.0+. Older versions might work but have not been tested.
 
+### Installation
+`composer require iqparts/cache`
+
 ### Another cache library
-This cache library has been highly inspired by [Genkgo.Cache](https://raw.githubusercontent.com/genkgo/cache). We recommend using this library as it implements more adapters. The reason for this library was the need to have a backup for redis which still was able to store cached values with a variable TTL.
+This cache library has been highly inspired by [Genkgo.Cache](https://github.com/genkgo/cache). We recommend using Genkgo's library as it implements more adapters. The reason for this library was the need to have a backup for redis which still was able to store cached values with a **variable** TTL.
 
 ### Code
+[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/IQParts/cache/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/IQParts/cache/?branch=master)
+[![Code Coverage](https://scrutinizer-ci.com/g/IQParts/cache/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/IQParts/cache/?branch=master)
+[![Build Status](https://scrutinizer-ci.com/g/IQParts/cache/badges/build.png?b=master)](https://scrutinizer-ci.com/g/IQParts/cache/build-status/master)
+
 This library attempts to comply with [PSR-1](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-1-basic-coding-standard.md), [PSR-2](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md) & [PSR-4](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-4-autoloader.md).
 
 ### Create your own adapter

composer.json

@@ -1,13 +1,14 @@
 {
   "name": "iqparts/cache",
   "type": "library",
+  "description": "Simple cache library with Redis and Filesystem adapters.",
   "license": "MIT",
   "require": {
+    "php": "^8.0",
     "predis/predis": "^1.1"
   },
   "require-dev": {
-    "phpunit/phpunit": "^6.3",
-    "phpstan/phpstan": "^0.9.1"
+    "phpunit/phpunit": "^9.5"
   },
   "autoload": {
     "psr-4": {

src/Adapter/CacheAdapterInterface.php

@@ -5,11 +5,12 @@ namespace IQParts\Cache\Adapter;
 interface CacheAdapterInterface
 {
     public const NO_TTL = -1;
+
     /**
      * @param string $key
      * @return mixed
      */
-    public function get(string $key);
+    public function get(string $key): mixed;
 
     /**
      * @param string $key
@@ -17,19 +18,19 @@ interface CacheAdapterInterface
      * @param int|null $ttl
      * @return void
      */
-    public function set(string $key, $value, int $ttl = null);
+    public function set(string $key, $value, int $ttl = null): void;
 
     /**
      * @param string $key
-     * @return mixed
+     * @return void
      */
-    public function delete(string $key);
+    public function delete(string $key): void;
 
     /**
      * @param string $key
-     * @return mixed
+     * @return array
      */
-    public function keys($key = '*');
+    public function keys($key = '*'): array;
 
     /**
      * @param $key

src/Adapter/FilesystemAdapter.php

@@ -9,39 +9,39 @@ class FilesystemAdapter implements CacheAdapterInterface
     /**
      * @var string
      */
-    private $directory;
+    private string $directory;
     /**
      * @var null|int
      */
-    private $chmod;
+    private ?int $chmod;
     /**
      * @var string
      */
-    private $directorySeparator;
+    private ?string $directorySeparator;
     /**
      * @var int|null
      */
-    private $ttl;
+    private ?int $ttl;
     /**
      * @var array
      */
-    private $timeToLive;
+    private mixed $timeToLive;
     /**
      * @var SerializerInterface
      */
-    private $serializer;
+    private SerializerInterface $serializer;
     /**
      * @var array
      */
-    private $index;
+    private mixed $index;
     /**
      * @var string
      */
-    private $indexLocation;
+    private string $indexLocation;
     /**
      * @var string
      */
-    private $ttlLocation;
+    private string $ttlLocation;
 
     /**
      * FilesystemAdapter constructor.
@@ -49,21 +49,21 @@ class FilesystemAdapter implements CacheAdapterInterface
      * @param SerializerInterface $serializer
      * @param int|null $chmod
      * @param int|null $ttl
-     * @param string|null $directorySeperator
+     * @param string|null $directorySeparator
      */
     public function __construct(
         string $directory,
         SerializerInterface $serializer,
         int $chmod = null,
         int $ttl = null,
-        string $directorySeperator = null
+        string $directorySeparator = null
     )
     {
         $this->indexLocation = $directory . '/' . md5($directory) . 'index';
         $this->ttlLocation = $directory . '/' . md5($directory) . 'ttl';
         $this->directory = $directory;
         $this->serializer = $serializer;
-        $this->directorySeparator = $directorySeperator;
+        $this->directorySeparator = $directorySeparator;
         $this->chmod = $chmod;
         $this->ttl = $ttl;
 
@@ -84,7 +84,7 @@ class FilesystemAdapter implements CacheAdapterInterface
      * @param string $key
      * @return mixed
      */
-    public function get(string $key)
+    public function get(string $key): mixed
     {
         $file = $this->getFilename($key);
         if ($this->exists($file)) {
@@ -106,7 +106,7 @@ class FilesystemAdapter implements CacheAdapterInterface
      * @param int|null $ttl
      * @return void
      */
-    public function set(string $key, $value, int $ttl = null)
+    public function set(string $key, $value, int $ttl = null): void
     {
         $file = $this->getFilename($key);
         file_put_contents($file, $this->serializer->serialize($value));
@@ -126,9 +126,9 @@ class FilesystemAdapter implements CacheAdapterInterface
     /**
      * @param string $key
      */
-    public function delete(string $key)
+    public function delete(string $key): void
     {
-        if (strpos($key, '*') !== false) {
+        if (str_contains($key, '*')) {
             $this->deleteGlob($key);
             $this->saveIndex();
         } else {
@@ -136,17 +136,16 @@ class FilesystemAdapter implements CacheAdapterInterface
             if ($this->exists($file)) {
                 unlink($file);
             }
-            unset($this->index[$key]);
-            unset($this->timeToLive[$key]);
+            unset($this->index[$key], $this->timeToLive[$key]);
             $this->saveIndex();
         }
     }
 
     /**
      * @param string $key
-     * @return mixed
+     * @return array
      */
-    public function keys($key = '*')
+    public function keys($key = '*'): array
     {
         $matches = [];
         foreach ($this->index as $name => $index) {
@@ -175,7 +174,7 @@ class FilesystemAdapter implements CacheAdapterInterface
     /**
      * @param $pattern
      */
-    private function deleteGlob($pattern)
+    private function deleteGlob($pattern): void
     {
         foreach ($this->index as $key => $value) {
             if (fnmatch($pattern, $key)) {
@@ -188,7 +187,7 @@ class FilesystemAdapter implements CacheAdapterInterface
      * @param $file
      * @return bool
      */
-    private function exists(string $file)
+    private function exists(string $file): bool
     {
         return file_exists($file);
     }
@@ -197,9 +196,9 @@ class FilesystemAdapter implements CacheAdapterInterface
      * @param $key
      * @return string
      */
-    private function getFilename(string $key)
+    private function getFilename(string $key): string
     {
-        list($directory, $file) = $this->getDirectoryAndFile($key);
+        [$directory, $file] = $this->getDirectoryAndFile($key);
         return $directory . '/' . md5($file);
     }
 
@@ -207,7 +206,7 @@ class FilesystemAdapter implements CacheAdapterInterface
      * @param string $key
      * @return array
      */
-    private function getDirectoryAndFile(string $key)
+    private function getDirectoryAndFile(string $key): array
     {
         $directory = $this->directory;
         if ($this->directorySeparator !== null) {
@@ -224,17 +223,19 @@ class FilesystemAdapter implements CacheAdapterInterface
     /**
      * @param $directory
      */
-    private function createSubDirectoryIfNotExists($directory)
+    private function createSubDirectoryIfNotExists($directory): void
     {
         if (file_exists($directory) === false) {
-            mkdir($directory);
+            if (!mkdir($directory) && !is_dir($directory)) {
+                throw new \RuntimeException(sprintf('Directory "%s" was not created', $directory));
+            }
             if ($this->chmod !== null) {
                 chmod($directory, $this->chmod);
             }
         }
     }
 
-    private function saveIndex()
+    private function saveIndex(): void
     {
         file_put_contents($this->indexLocation, json_encode($this->index));
         file_put_contents($this->ttlLocation, json_encode($this->timeToLive));

src/Adapter/MemoryAdapter.php

@@ -8,17 +8,17 @@ final class MemoryAdapter implements CacheAdapterInterface
     /**
      * @var array
      */
-    private $data = [];
+    private array $data = [];
     /**
      * @var array
      */
-    private $timeToLive = [];
+    private array $timeToLive = [];
 
     /**
      * @param string $key
      * @return mixed
      */
-    public function get(string $key)
+    public function get(string $key): mixed
     {
         if (!isset($this->data[$key])) {
             return null;
@@ -32,8 +32,7 @@ final class MemoryAdapter implements CacheAdapterInterface
             return $this->data[$key];
         }
 
-        unset($this->timeToLive[$key]);
-        unset($this->data[$key]);
+        unset($this->timeToLive[$key], $this->data[$key]);
         return null;
     }
 
@@ -43,7 +42,7 @@ final class MemoryAdapter implements CacheAdapterInterface
      * @param int|null $ttl
      * @return void
      */
-    public function set(string $key, $value, int $ttl = null)
+    public function set(string $key, $value, int $ttl = null): void
     {
         $this->data[$key] = $value;
         if ($ttl !== null) {
@@ -53,20 +52,18 @@ final class MemoryAdapter implements CacheAdapterInterface
 
     /**
      * @param string $key
-     * @return mixed
+     * @return void
      */
-    public function delete(string $key)
+    public function delete(string $key): void
     {
-        unset($this->data[$key]);
-        unset($this->timeToLive[$key]);
-        return 1;
+        unset($this->data[$key], $this->timeToLive[$key]);
     }
 
     /**
      * @param string $key
-     * @return mixed
+     * @return array
      */
-    public function keys($key = '*')
+    public function keys($key = '*'): array
     {
         $matches = [];
         foreach ($this->data as $name => $value) {

src/Adapter/NamespaceAdapter.php

@@ -7,11 +7,11 @@ final class NamespaceAdapter implements CacheAdapterInterface
     /**
      * @var string
      */
-    private $namespace;
+    private string $namespace;
     /**
      * @var CacheAdapterInterface
      */
-    private $cacheAdapter;
+    private CacheAdapterInterface $cacheAdapter;
 
     /**
      * NamespaceAdapter constructor.
@@ -28,7 +28,7 @@ final class NamespaceAdapter implements CacheAdapterInterface
      * @param string $key
      * @return mixed
      */
-    public function get(string $key)
+    public function get(string $key): mixed
     {
         return $this->cacheAdapter->get($this->namespace . $key);
     }
@@ -48,7 +48,7 @@ final class NamespaceAdapter implements CacheAdapterInterface
      * @param string $key
      * @return void
      */
-    public function delete(string $key)
+    public function delete(string $key): void
     {
         $this->cacheAdapter->delete($this->namespace . $key);
     }
@@ -57,19 +57,20 @@ final class NamespaceAdapter implements CacheAdapterInterface
      * @param string $key
      * @return array
      */
-    public function keys($key = '*')
+    public function keys($key = '*'): array
     {
         if (substr($key, -1) !== '*') {
-            $key = $key . '*';
+            $key .= '*';
         }
 
+        /** @var string[] $keys */
         $keys = $this->cacheAdapter->keys($this->namespace . $key);
         $allowed = [];
-        $len = strlen($this->namespace);
+        $len = \strlen($this->namespace);
 
-        foreach ($keys as $key) {
-            if (substr($key, 0, $len) === $this->namespace) {
-                $allowed[] = substr($key, $len);
+        foreach ($keys as $cacheKey) {
+            if (str_starts_with($cacheKey, $this->namespace)) {
+                $allowed[] = substr($cacheKey, $len);
             }
         }
 

src/Adapter/NullAdapter.php

@@ -9,7 +9,7 @@ final class NullAdapter implements CacheAdapterInterface
      * @param string $key
      * @return mixed
      */
-    public function get(string $key)
+    public function get(string $key): mixed
     {
         return null;
     }
@@ -20,7 +20,7 @@ final class NullAdapter implements CacheAdapterInterface
      * @param int|null $ttl
      * @return void
      */
-    public function set(string $key, $value, int $ttl = null)
+    public function set(string $key, $value, int $ttl = null): void
     {
     }
 
@@ -28,15 +28,15 @@ final class NullAdapter implements CacheAdapterInterface
      * @param string $key
      * @return void
      */
-    public function delete(string $key)
+    public function delete(string $key): void
     {
     }
 
     /**
      * @param string $key
-     * @return mixed
+     * @return array
      */
-    public function keys($key = '')
+    public function keys($key = ''): array
     {
         return [];
     }

src/Adapter/PredisAdapter.php

@@ -9,17 +9,17 @@ use Predis\ClientInterface;
 final class PredisAdapter implements CacheAdapterInterface
 {
     /**
-     * @var Client
+     * @var ClientInterface
      */
-    private $client;
+    private ClientInterface $client;
     /**
      * @var SerializerInterface
      */
-    private $serializer;
+    private SerializerInterface $serializer;
     /**
      * @var null
      */
-    private $defaultTtl;
+    private ?int $defaultTtl;
 
     /**
      * PredisAdapter constructor.
@@ -38,7 +38,7 @@ final class PredisAdapter implements CacheAdapterInterface
      * @param string $key
      * @return mixed
      */
-    public function get(string $key)
+    public function get(string $key): mixed
     {
         return $this->serializer->deserialize($this->client->get($key));
     }
@@ -48,7 +48,7 @@ final class PredisAdapter implements CacheAdapterInterface
      * @param $value
      * @param int|null $ttl TTL in seconds
      */
-    public function set(string $key, $value, int $ttl = null)
+    public function set(string $key, $value, int $ttl = null): void
     {
         if ($ttl !== null && $ttl !== 0) {
             $this->client->setex($key, $ttl ?? $this->defaultTtl, $this->serializer->serialize($value));
@@ -59,18 +59,18 @@ final class PredisAdapter implements CacheAdapterInterface
 
     /**
      * @param string $key
-     * @return integer
+     * @return void
      */
-    public function delete(string $key): int
+    public function delete(string $key): void
     {
-        return $this->client->del([$key]);
+        $this->client->del([$key]);
     }
 
     /**
      * @param string $key
-     * @return mixed
+     * @return array
      */
-    public function keys($key = '*')
+    public function keys($key = '*'): array
     {
         return $this->client->keys($key);
     }

src/Serializer/JsonSerializer.php

@@ -4,16 +4,24 @@ namespace IQParts\Cache\Serializer;
 
 final class JsonSerializer implements SerializerInterface
 {
-    public function serialize($input)
+    /**
+     * @param $input
+     * @return string
+     */
+    public function serialize($input): string
     {
-        if (is_array($input)) {
+        if (\is_array($input)) {
             return json_encode($input);
         }
 
         return $input;
     }
 
-    public function deserialize($string)
+    /**
+     * @param $string
+     * @return mixed
+     */
+    public function deserialize($string): mixed
     {
         return json_decode($string, true) ?? $string;
     }

src/Serializer/NoSerializer.php

@@ -5,12 +5,12 @@ namespace IQParts\Cache\Serializer;
 
 final class NoSerializer implements SerializerInterface
 {
-    public function serialize($input)
+    public function serialize($input): string
     {
         return $input;
     }
 
-    public function deserialize($string)
+    public function deserialize($string): mixed
     {
         return $string;
     }

src/Serializer/SerializerInterface.php

@@ -4,7 +4,15 @@ namespace IQParts\Cache\Serializer;
 
 interface SerializerInterface
 {
-    public function serialize($input);
+    /**
+     * @param $input
+     * @return string
+     */
+    public function serialize($input): string;
 
-    public function deserialize($string);
+    /**
+     * @param $string
+     * @return mixed
+     */
+    public function deserialize($string): mixed;
 }

test/AbstractTestCase.php

@@ -6,11 +6,14 @@ use PHPUnit\Framework\TestCase;
 
 abstract class AbstractTestCase extends TestCase
 {
-    public function getTmpDirectory()
+    /**
+     * @return string
+     */
+    public function getTmpDirectory(): string
     {
         $location = __DIR__ . '/../tmp';
         if (!file_exists($location)) {
-            if (!mkdir($location)) {
+            if (!mkdir($location) && !is_dir($location)) {
                 throw new \RuntimeException('Could not create directory: ' . $location);
             }
             chmod($location, 0777);

test/Unit/Adapter/FilesystemAdapterTest.php

@@ -6,6 +6,8 @@ namespace IQParts\CacheTest\Unit\Adapter;
 use IQParts\Cache\Adapter\FilesystemAdapter;
 use IQParts\Cache\Serializer\JsonSerializer;
 use IQParts\CacheTest\AbstractTestCase;
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
 
 final class FilesystemAdapterTest extends AbstractTestCase
 {
@@ -27,7 +29,7 @@ final class FilesystemAdapterTest extends AbstractTestCase
 
         $adapter->set('ttl', 'b', 200);
         $this->assertTrue($adapter->ttl('ttl') > 0);
-        $this->assertTrue($adapter->ttl('b') === $adapter::NO_TTL);
+        $this->assertSame($adapter->ttl('b'), $adapter::NO_TTL);
 
         $adapter->set('a-keys', 'a');
         $adapter->set('b-keys', 'a');
@@ -118,4 +120,22 @@ final class FilesystemAdapterTest extends AbstractTestCase
         $this->assertEquals('a', $adapter->get('a/b'));
         $adapter->delete('a/b');
     }
+
+    protected function tearDown(): void
+    {
+        parent::tearDown();
+        $files = new RecursiveIteratorIterator(
+            new RecursiveDirectoryIterator($this->getTmpDirectory(), RecursiveDirectoryIterator::SKIP_DOTS),
+            RecursiveIteratorIterator::CHILD_FIRST
+        );
+
+        foreach ($files as $file) {
+            if ($file->isDir()) {
+                rmdir($file->getRealPath());
+            } else {
+                unlink($file->getRealPath());
+            }
+        }
+    }
+
 }

test/Unit/Adapter/MemoryAdapterTest.php

@@ -8,6 +8,9 @@ use IQParts\CacheTest\AbstractTestCase;
 
 final class MemoryAdapterTest extends AbstractTestCase
 {
+    /**
+     *
+     */
     public function testAdapter()
     {
         $adapter = new MemoryAdapter();
@@ -25,7 +28,7 @@ final class MemoryAdapterTest extends AbstractTestCase
 
         $adapter->set('a', 'b', 200);
         $this->assertTrue($adapter->ttl('a') > 0);
-        $this->assertTrue($adapter->ttl('c') === MemoryAdapter::NO_TTL);
+        $this->assertSame($adapter->ttl('c'), MemoryAdapter::NO_TTL);
     }
 
     public function testTtl()

test/Unit/Adapter/NamespaceAdapterTest.php

@@ -15,7 +15,7 @@ final class NamespaceAdapterTest extends AbstractTestCase
      */
     private $adapter;
 
-    public function setUp()
+    public function setUp(): void
     {
         $this->adapter = new MemoryAdapter();
     }

test/Unit/Serializer/JsonSerializerTest.php

@@ -10,12 +10,10 @@ final class JsonSerializerTest extends AbstractTestCase
     public function testSerialize()
     {
         $serializer = new JsonSerializer();
-        $string = "myString";
+        $string = 'myString';
         $array = [0 => '1', 1 => '2', 2 => '3'];
 
-        $this->assertTrue(is_string($serializer->serialize($array)));
         $this->assertEquals($string, $serializer->serialize($string));
-
         $this->assertEquals($array, $serializer->deserialize($serializer->serialize($array)));
     }