ENH PHP 8.1 compatibility

src/Auth/BasicAuthAuthenticator.php

@@ -44,6 +44,6 @@ public function isApplicable(HTTPRequest $request)
      */
     protected function hasAuthHandler($servervar)
     {
-        return isset($_SERVER[$servervar]) && preg_match('/Basic\s+(.*)$/i', $_SERVER[$servervar]);
+        return isset($_SERVER[$servervar]) && preg_match('/Basic\s+(.*)$/i', $_SERVER[$servervar] ?? '');
     }
 }

src/Controller.php

@@ -298,7 +298,7 @@ protected function validateOrigin($origin, $allowedOrigins)
             if ($allowedOrigin === '*') {
                 return true;
             }
-            if (strcasecmp($allowedOrigin, $origin) === 0) {
+            if (strcasecmp($allowedOrigin ?? '', $origin ?? '') === 0) {
                 return true;
             }
         }
@@ -347,7 +347,7 @@ protected function getRequestOrigin(HTTPRequest $request)
         $referer = $request->getHeader('Referer');
         if ($referer) {
             // Extract protocol, hostname, and port
-            $refererParts = parse_url($referer);
+            $refererParts = parse_url($referer ?? '');
             if (!$refererParts) {
                 return null;
             }
@@ -394,7 +394,7 @@ protected function handleOptions(HTTPRequest $request)
     protected function getRequestQueryVariables(HTTPRequest $request)
     {
         $contentType = $request->getHeader('content-type');
-        $isJson = preg_match('#^application/json\b#', $contentType);
+        $isJson = preg_match('#^application/json\b#', $contentType ?? '');
         if ($isJson) {
             $rawBody = $request->getBody();
             $data = json_decode($rawBody ?: '', true);
@@ -404,7 +404,7 @@ protected function getRequestQueryVariables(HTTPRequest $request)
         } else {
             $query = $request->requestVar('query');
             $id = $request->requestVar('id');
-            $variables = json_decode($request->requestVar('variables'), true);
+            $variables = json_decode($request->requestVar('variables') ?? '', true);
         }
 
         if ($id) {
@@ -515,7 +515,7 @@ public static function flush()
         $routes = Director::config()->get('rules');
         foreach ($routes as $pattern => $controllerInfo) {
             $routeClass = (is_string($controllerInfo)) ? $controllerInfo : $controllerInfo['Controller'];
-            if (stristr($routeClass, Controller::class) !== false) {
+            if (stristr($routeClass ?? '', Controller::class) !== false) {
                 try {
                     $inst = Injector::inst()->convertServiceProperty($routeClass);
                     if ($inst instanceof Controller) {

src/FieldCreator.php

@@ -147,7 +147,7 @@ protected function getResolver()
 
         return function () use ($resolver) {
             $args = func_get_args();
-            $result = call_user_func_array($resolver, $args);
+            $result = call_user_func_array($resolver, $args ?? []);
 
             return $result;
         };

src/InterfaceTypeCreator.php

@@ -26,7 +26,7 @@ protected function getTypeResolver()
 
         return function () use ($resolver) {
             $args = func_get_args();
-            return call_user_func_array($resolver, $args);
+            return call_user_func_array($resolver, $args ?? []);
         };
     }
 

src/Manager.php

@@ -134,7 +134,7 @@ protected function callMiddleware(Schema $schema, $query, $context, $params, cal
         // Reverse middlewares
         $next = $last;
         // Filter out any middlewares that are set to `false`, e.g. via config
-        $middlewares = array_reverse(array_filter($this->getMiddlewares()));
+        $middlewares = array_reverse(array_filter($this->getMiddlewares() ?? []));
         /** @var QueryMiddleware $middleware */
         foreach ($middlewares as $middleware) {
             $next = function ($schema, $query, $context, $params) use ($middleware, $next) {
@@ -205,20 +205,20 @@ public function applyConfig(array $config)
         $this->extend('updateConfig', $config);
 
         // Bootstrap schema class mapping from config
-        if (array_key_exists('typeNames', $config)) {
+        if (array_key_exists('typeNames', $config ?? [])) {
             StaticSchema::inst()->setTypeNames($config['typeNames']);
         }
-        if (array_key_exists('fieldFormatter', $config)) {
+        if (array_key_exists('fieldFormatter', $config ?? [])) {
             StaticSchema::inst()->setFieldFormatter($config['fieldFormatter']);
         }
-        if (array_key_exists('fieldAccessor', $config)) {
+        if (array_key_exists('fieldAccessor', $config ?? [])) {
             StaticSchema::inst()->setFieldAccessor(Injector::inst()->get($config['fieldAccessor']));
         } else {
             StaticSchema::inst()->setFieldAccessor(Injector::inst()->get(NaiveFieldAccessor::class));
         }
 
         // Types (incl. Interfaces and InputTypes)
-        if (array_key_exists('types', $config)) {
+        if (array_key_exists('types', $config ?? [])) {
             foreach ($config['types'] as $name => $typeCreatorClass) {
                 $typeCreator = Injector::inst()->create($typeCreatorClass, $this);
                 if (!($typeCreator instanceof TypeCreator)) {
@@ -234,7 +234,7 @@ public function applyConfig(array $config)
         }
 
         // Queries
-        if ($config && array_key_exists('queries', $config)) {
+        if ($config && array_key_exists('queries', $config ?? [])) {
             foreach ($config['queries'] as $name => $queryCreatorClass) {
                 $queryCreator = Injector::inst()->create($queryCreatorClass, $this);
                 if (!($queryCreator instanceof QueryCreator)) {
@@ -251,7 +251,7 @@ public function applyConfig(array $config)
         }
 
         // Mutations
-        if ($config && array_key_exists('mutations', $config)) {
+        if ($config && array_key_exists('mutations', $config ?? [])) {
             foreach ($config['mutations'] as $name => $mutationCreatorClass) {
                 $mutationCreator = Injector::inst()->create($mutationCreatorClass, $this);
                 if (!($mutationCreator instanceof MutationCreator)) {
@@ -274,7 +274,7 @@ public function applyConfig(array $config)
         }
         if (isset($config['scaffolding_providers'])) {
             foreach ($config['scaffolding_providers'] as $provider) {
-                if (!class_exists($provider)) {
+                if (!class_exists($provider ?? '')) {
                     throw new InvalidArgumentException(sprintf(
                         'Scaffolding provider %s does not exist.',
                         $provider
@@ -315,7 +315,7 @@ public function schema()
                 'fields' => function () {
                     return array_map(function ($query) {
                         return is_callable($query) ? $query() : $query;
-                    }, $this->queries);
+                    }, $this->queries ?? []);
                 },
             ]);
         } else {
@@ -330,7 +330,7 @@ public function schema()
                 'fields' => function () {
                     return array_map(function ($mutation) {
                         return is_callable($mutation) ? $mutation() : $mutation;
-                    }, $this->mutations);
+                    }, $this->mutations ?? []);
                 },
             ]);
         }
@@ -491,7 +491,7 @@ public function setSchemaKey($schemaKey)
                 __CLASS__
             ));
         }
-        if (preg_match('/[^A-Za-z0-9_-]/', $schemaKey)) {
+        if (preg_match('/[^A-Za-z0-9_-]/', $schemaKey ?? '')) {
             throw new InvalidArgumentException(sprintf(
                 '%s schemaKey may only contain alphanumeric characters, dashes, and underscores',
                 __CLASS__
@@ -519,7 +519,7 @@ public static function formatError(Error $exception)
         if (!empty($locations)) {
             $error['locations'] = array_map(function (SourceLocation $loc) {
                 return $loc->toArray();
-            }, $locations);
+            }, $locations ?? []);
         }
 
         $previous = $exception->getPrevious();
@@ -619,7 +619,7 @@ public function serialiseResult($executionResult)
         if (!empty($executionResult->errors)) {
             return [
                 'data' => $executionResult->data,
-                'errors' => array_map($this->errorFormatter, $executionResult->errors),
+                'errors' => array_map($this->errorFormatter, $executionResult->errors ?? []),
             ];
         } else {
             return [

src/Middleware/CSRFMiddleware.php

@@ -35,12 +35,12 @@ public function process(Schema $schema, $query, $context, $params, callable $nex
     protected function isMutation($query)
     {
         // Simple string matching as a first check to prevent unnecessary static analysis
-        if (stristr($query, Manager::MUTATION_ROOT) === false) {
+        if (stristr($query ?? '', Manager::MUTATION_ROOT ?? '') === false) {
             return false;
         }
 
         // If "mutation" is the first expression in the query, then it's a mutation.
-        if (preg_match('/^\s*'.preg_quote(Manager::MUTATION_ROOT, '/').'/', $query)) {
+        if (preg_match('/^\s*'.preg_quote(Manager::MUTATION_ROOT ?? '', '/').'/', $query ?? '')) {
             return true;
         }
 
@@ -52,7 +52,7 @@ protected function isMutation($query)
                 NodeKind::OPERATION_DEFINITION,
                 NodeKind::OPERATION_TYPE_DEFINITION
             ];
-            if (!in_array($statement->kind, $options, true)) {
+            if (!in_array($statement->kind, $options ?? [], true)) {
                 continue;
             }
             if ($statement->operation === Manager::MUTATION_ROOT) {

src/Middleware/HTTPMethodMiddleware.php

@@ -21,7 +21,7 @@ public function process(Schema $schema, $query, $context, $params, callable $nex
             throw new Exception('Request method must be POST or GET');
         }
 
-        if (preg_match('/^\s*mutation/', $query)) {
+        if (preg_match('/^\s*mutation/', $query ?? '')) {
             if (!$isPOST) {
                 throw new Exception('Mutations must use the POST request method');
             }

src/Pagination/Connection.php

@@ -458,7 +458,7 @@ protected function applySort($list, $sortBy)
         foreach ($sortBy as $sortInput) {
             if (isset($sortInput['field'])) {
                 $direction = isset($sortInput['direction']) ? $sortInput['direction'] : 'ASC';
-                if (!array_key_exists($sortInput['field'], $sortableFields)) {
+                if (!array_key_exists($sortInput['field'], $sortableFields ?? [])) {
                     throw new InvalidArgumentException(sprintf(
                         '"%s" is not a valid sort column',
                         $sortInput['field']

src/Pagination/SortInputTypeCreator.php

@@ -80,7 +80,7 @@ public function getAttributes()
     public function attributes()
     {
         return [
-            'name' => ucfirst($this->inputName) .'SortInputType',
+            'name' => ucfirst($this->inputName ?? '') .'SortInputType',
             'description' => 'Define the sorting',
         ];
     }
@@ -95,7 +95,7 @@ public function fields()
         }
 
         $sortableField = new EnumType([
-            'name' => ucfirst($this->inputName) . 'SortFieldType',
+            'name' => ucfirst($this->inputName ?? '') . 'SortFieldType',
             'description' => 'Field name to sort by.',
             'values' => $values,
         ]);

src/PersistedQuery/FileProvider.php

@@ -48,9 +48,9 @@ public function getQueryMapping($schemaKey = 'default')
             return [];
         }
 
-        $path = trim($pathWithKey[$schemaKey]);
-        $contents = trim(file_get_contents($path));
-        $result = json_decode($contents, true);
+        $path = trim($pathWithKey[$schemaKey] ?? '');
+        $contents = trim(file_get_contents($path ?? '') ?? '');
+        $result = json_decode($contents ?? '', true);
         if (!is_array($result)) {
             return [];
         }

src/PersistedQuery/GuzzleHTTPClient.php

@@ -21,7 +21,7 @@ public function getURL($url, $timeout = 5)
 
         try {
             $response = $client->send($request, ['timeout' => $timeout]);
-            $contents = trim($response->getBody()->getContents());
+            $contents = trim($response->getBody()->getContents() ?? '');
         } catch (RuntimeException $e) {
             user_error($e->getMessage(), E_USER_WARNING);
             return null;

src/PersistedQuery/HTTPProvider.php

@@ -85,11 +85,11 @@ public function getQueryMapping($schemaKey = 'default')
             return [];
         }
 
-        $url = trim($urlWithKey[$schemaKey]);
+        $url = trim($urlWithKey[$schemaKey] ?? '');
         $map = null;
         try {
             $contents = $this->getClient()->getURL($url, $this->config()->get('timeout'));
-            $map = json_decode($contents, true);
+            $map = json_decode($contents ?? '', true);
         } catch (Exception $e) {
             user_error($e->getMessage(), E_USER_WARNING);
             $map = [];

src/PersistedQuery/JSONStringProvider.php

@@ -53,7 +53,7 @@ public function getQueryMapping($schemaKey = 'default')
         }
 
         $mapping = $mappingWithKey[$schemaKey];
-        $result = json_decode($mapping, true);
+        $result = json_decode($mapping ?? '', true);
         if (!is_array($result)) {
             return [];
         }
@@ -87,7 +87,7 @@ public function setSchemaMapping(array $mapping)
                     'setSchemaMapping accepts an array of schema keys to JSON strings'
                 );
             }
-            if (json_decode($queryMap) === null) {
+            if (json_decode($queryMap ?? '') === null) {
                 throw new InvalidArgumentException(
                     'setSchemaMapping passed an invalid string of JSON. Got error: ' . json_last_error()
                 );

src/QueryFilter/DataObjectQueryFilter.php

@@ -180,7 +180,7 @@ public function addDefaultFilters($field)
      */
     public function addAllFilters()
     {
-        $fields = array_keys($this->getDataObjectInstance()->searchableFields());
+        $fields = array_keys($this->getDataObjectInstance()->searchableFields() ?? []);
         foreach ($fields as $fieldName) {
             $this->addDefaultFilters($fieldName);
         }
@@ -289,7 +289,7 @@ public function getFiltersForField($fieldName)
      */
     public function getFilterIdentifiersForField($fieldName)
     {
-        return array_keys($this->getFiltersForField($fieldName));
+        return array_keys($this->getFiltersForField($fieldName) ?? []);
     }
 
 
@@ -316,7 +316,7 @@ public function isFieldFiltered($fieldName)
     public function fieldHasFilter($fieldName, $id)
     {
         if ($this->isFieldFiltered($fieldName)) {
-            return in_array($id, $this->getFilterIdentifiersForField($fieldName));
+            return in_array($id, $this->getFilterIdentifiersForField($fieldName) ?? []);
         }
 
         return false;
@@ -379,7 +379,7 @@ public function applyConfig(array $config)
     protected function getFieldFilters(array $filters)
     {
         foreach ($filters as $key => $val) {
-            $pos = strrpos($key, self::SEPARATOR);
+            $pos = strrpos($key ?? '', self::SEPARATOR ?? '');
             // falsy is okay here because a leading __ is invalid.
             if (!$pos) {
                 throw new InvalidArgumentException(sprintf(
@@ -388,12 +388,12 @@ protected function getFieldFilters(array $filters)
                     self::SEPARATOR
                 ));
             }
-            $parts = explode(self::SEPARATOR, $key);
+            $parts = explode(self::SEPARATOR ?? '', $key ?? '');
             $filterIdentifier = array_pop($parts);
             // If the field segment contained __, that implies relationship (dot notation)
             $field = implode('.', $parts);
             // The Field key is written with self::SEPARATOR
-            $fieldName = implode(self::SEPARATOR, $parts);
+            $fieldName = implode(self::SEPARATOR ?? '', $parts);
             $filter = $this->getFieldFilterByIdentifier($fieldName, $filterIdentifier);
             if (!$filter instanceof FieldFilterInterface) {
                 $filter = $this->getFilterRegistry()->getFilterByIdentifier($filterIdentifier);
@@ -417,11 +417,11 @@ protected function getFieldFilters(array $filters)
     protected function getDBField($field)
     {
         $dbField = null;
-        if (stristr($field, self::SEPARATOR) !== false) {
-            $relationNames = explode(self::SEPARATOR, $field);
+        if (stristr($field ?? '', self::SEPARATOR ?? '') !== false) {
+            $relationNames = explode(self::SEPARATOR ?? '', $field ?? '');
             $relationField = array_pop($relationNames);
             // reverse array so we can use the faster array_pop
-            $relationNames = array_reverse($relationNames);
+            $relationNames = array_reverse($relationNames ?? []);
             // initialize current class
             $class = get_class($this->getDataObjectInstance());
             do {

src/QueryFilter/FieldFilterRegistry.php

@@ -39,7 +39,7 @@ public function addFilter(FieldFilterInterface $filter, $identifier = null)
             ));
         }
         $id = $identifier ?: $filter->getIdentifier();
-        if (!preg_match('/^[A-Za-z0-9_]+$/', $id)) {
+        if (!preg_match('/^[A-Za-z0-9_]+$/', $id ?? '')) {
             throw new InvalidArgumentException(sprintf(
                 'Filter %s has an invalid identifier. Only alphanumeric characters and underscores allowed.',
                 get_class($filter)

src/Scaffolding/Scaffolders/CRUD/Create.php

@@ -42,7 +42,7 @@ public function getName()
             return $name;
         }
 
-        return 'create' . ucfirst($this->getTypeName());
+        return 'create' . ucfirst($this->getTypeName() ?? '');
     }
 
     /**
@@ -126,7 +126,7 @@ public function resolve($object, array $args, $context, ResolveInfo $info)
 
         // Extension points that return false should kill the create
         $results = $this->extend('augmentMutation', $newObject, $args, $context, $info);
-        if (in_array(false, $results, true)) {
+        if (in_array(false, $results ?? [], true)) {
             return null;
         }