feat: add PHP 8 compatibility (#270)

.circleci/config.yml

@@ -64,13 +64,13 @@ unit-config: &unit-config
 
     - run:
         name: PHP unit tests
-        command: vendor/bin/phpunit
+        command: XDEBUG_MODE=coverage vendor/bin/phpunit
 
     - run:
         name: PHP unit tests with extension
         command: |
           if [ $RUN_EXTENSION_TESTS -eq "1" ]; then
-            php -d extension=opencensus.so vendor/bin/phpunit
+            XDEBUG_MODE=coverage php -d extension=opencensus.so vendor/bin/phpunit
           else
             echo "Skipping units tests with extension"
           fi
@@ -107,29 +107,30 @@ jobs:
     docker:
       - image: circleci/php:7.3-zts-node
 
-  php71-32bit:
+  php74:
     <<: *unit-config
     docker:
-      - image: gcr.io/php-stackdriver/php71-32bit
-    environment:
-      TEST_PHP_ARGS: -q
-      REPORT_EXIT_STATUS: 1
-      RUN_EXTENSION_TESTS: 1
-      SUDO_CMD: ""
+      - image: circleci/php:7.4-node
 
-  php71-debug:
+  php74-zts:
     <<: *unit-config
     docker:
-      - image: gcr.io/php-stackdriver/php71-debug
-    environment:
-      TEST_PHP_ARGS: -q
-      REPORT_EXIT_STATUS: 1
-      RUN_EXTENSION_TESTS: 1
-      SUDO_CMD: ""
+      - image: circleci/php:7.4-zts-node
 
-  integration:
+  php80:
+    <<: *unit-config
     docker:
-      - image: circleci/php:7.2-node
+      - image: circleci/php:8.0-node
+
+  php80-zts:
+    <<: *unit-config
+    docker:
+      - image: circleci/php:8.0-zts-node
+
+  # Integration tests running on PHP 7.4. When updating these, please also update `integration-8.0` further down.
+  integration-7.4:
+    docker:
+      - image: circleci/php:7.4-node
       - image: memcached
       - image: mysql:5.7
         environment:
@@ -202,11 +203,13 @@ jobs:
       - run:
           name: Pgsql test
           command: tests/integration/pgsql/test.sh
-      - run:
-          name: Symfony 4 test
-          command: tests/integration/symfony4/test.sh
-          environment:
-            DATABASE_URL: mysql://mysql:[email protected]:3306/mysqldb
+# Skipped due to a dependency incompatibility between "cache/adapter-common" and "psr/cache".
+# TODO(mrmage): Re-enable this step once "cache/adapter-common" supports "psr/cache" v2.0/v3.0.
+#      - run:
+#          name: Symfony 4 test
+#          command: tests/integration/symfony4/test.sh
+#          environment:
+#            DATABASE_URL: mysql://mysql:[email protected]:3306/mysqldb
       - run:
           name: Wordpress test
           command: tests/integration/wordpress/test.sh
@@ -216,6 +219,100 @@ jobs:
       DB_PASSWORD: mysql
       DB_DATABASE: mysqldb
 
+  # Integration tests running on PHP 8.0. When updating these, please also update `integration-7.4` further down.
+  integration-8.0:
+    docker:
+      - image: circleci/php:8.0-node
+      - image: memcached
+      - image: mysql:5.7
+        environment:
+          MYSQL_USER: mysql
+          MYSQL_PASSWORD: mysql
+          MYSQL_DATABASE: mysqldb
+          MYSQL_RANDOM_ROOT_PASSWORD: yes
+      - image: postgres:9.6
+        environment:
+          POSTGRES_PASSWORD: pgsql
+          POSTGRES_USER: postgres
+    steps:
+      - checkout
+      - run:
+          name: Install build tools
+          command: |
+            sudo apt-get update -y
+            sudo apt-get install -y -q --no-install-recommends \
+              build-essential \
+              g++ \
+              gcc \
+              libc-dev \
+              libpqxx-dev \
+              make \
+              autoconf \
+              git \
+              unzip
+      - run:
+          name: Install opencensus extension
+          command: |
+            cd ext
+            phpize
+            ./configure --enable-opencensus
+            sudo make install
+            sudo docker-php-ext-enable opencensus
+      - run:
+          name: Install memcached extension
+          command: |
+            sudo apt-get install -y -q --no-install-recommends \
+              libmemcached11 libmemcached-dev zlib1g-dev zlib1g
+            sudo pecl install memcached <<<''
+            sudo docker-php-ext-enable memcached
+      - run:
+          name: Install pdo_mysql extension
+          command: sudo docker-php-ext-install pdo_mysql
+      - run:
+          name: Install mysqli extension
+          command: sudo docker-php-ext-install mysqli
+      - run:
+          name: Install pgsql extension
+          command: sudo docker-php-ext-install pgsql
+      - run:
+          name: Install pcntl extension
+          command: sudo docker-php-ext-install pcntl
+      - run:
+          name: Curl test
+          command: tests/integration/curl/test.sh
+      - run:
+          name: Guzzle 5 test
+          command: tests/integration/guzzle5/test.sh
+      - run:
+          name: Guzzle 6 test
+          command: tests/integration/guzzle6/test.sh
+      - run:
+          name: Laravel test
+          command: tests/integration/laravel/test.sh
+      - run:
+          name: Memcached test
+          command: tests/integration/memcached/test.sh
+      - run:
+          name: Pgsql test
+          command: tests/integration/pgsql/test.sh
+# Skipped due to a dependency incompatibility between "cache/adapter-common" and "psr/cache".
+# TODO(mrmage): Re-enable this step once "cache/adapter-common" supports "psr/cache" v2.0/v3.0.
+#      - run:
+#          name: Symfony 4 test
+#          command: tests/integration/symfony4/test.sh
+#          environment:
+#            DATABASE_URL: mysql://mysql:[email protected]:3306/mysqldb
+# Skipped because "wp-cli" is currently not compatible with PHP 8 (see https://github.com/wp-cli/wp-cli/issues/5452).
+# TODO(mrmage): Re-enable this step once "wp-cli" supports PHP 8.
+#      - run:
+#          name: Wordpress test
+#          command: tests/integration/wordpress/test.sh
+    environment:
+      DB_HOST: 127.0.0.1
+      DB_USERNAME: mysql
+      DB_PASSWORD: mysql
+      DB_DATABASE: mysqldb
+
 workflows:
   version: 2
   units:
@@ -226,6 +323,9 @@ workflows:
       - php72-zts
       - php73
       - php73-zts
-      - php71-32bit
-      - php71-debug
-      - integration
+      - php74
+      - php74-zts
+      - php80
+      - php80-zts
+      - integration-7.4
+      - integration-8.0

composer.json

@@ -16,14 +16,14 @@
     "minimum-stability": "stable",
     "require": {
         "php": ">=7.1",
-        "ramsey/uuid": "~3",
+        "ramsey/uuid": "^3.0 || ^4.0",
         "psr/log": "^1.0",
-        "psr/cache": "^1.0",
+        "psr/cache": "^1.0 || ^2.0 || ^3.0",
         "cache/adapter-common": "^1.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.0",
-        "squizlabs/php_codesniffer": "2.*",
+        "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0",
+        "squizlabs/php_codesniffer": "^3.0",
         "twig/twig": "~2.0 || ~1.35",
         "symfony/yaml": "~3.3",
         "guzzlehttp/guzzle": "~5.3",

examples/symfony/web/app.php

@@ -3,14 +3,8 @@
 use Symfony\Component\HttpFoundation\Request;
 
 require __DIR__.'/../vendor/autoload.php';
-if (PHP_VERSION_ID < 70000) {
-    include_once __DIR__.'/../var/bootstrap.php.cache';
-}
 
 $kernel = new AppKernel('prod', false);
-if (PHP_VERSION_ID < 70000) {
-    $kernel->loadClassCache();
-}
 //$kernel = new AppCache($kernel);
 
 // When using the HttpCache, you need to call the method in your front controller instead of relying on the configuration parameter

examples/symfony/web/app_dev.php

@@ -22,9 +22,6 @@
 Debug::enable();
 
 $kernel = new AppKernel('dev', true);
-if (PHP_VERSION_ID < 70000) {
-    $kernel->loadClassCache();
-}
 $request = Request::createFromGlobals();
 $response = $kernel->handle($request);
 $response->send();

ext/opencensus.c

@@ -70,6 +70,10 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_opencensus_trace_add_message_event, 0, 0, 2)
     ZEND_ARG_TYPE_INFO(0, id, IS_STRING, 0)
     ZEND_ARG_ARRAY_INFO(0, options, 0)
 ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_void, 0, 0, 0)
+ZEND_END_ARG_INFO();
+
 /* }}} */
 
 static PHP_MINFO_FUNCTION(opencensus);
@@ -85,16 +89,16 @@ PHP_FUNCTION(opencensus_version);
 /* {{{ opencensus_functions[]
  */
 static zend_function_entry opencensus_functions[] = {
-    PHP_FE(opencensus_version, NULL)
+    PHP_FE(opencensus_version, arginfo_void)
 	PHP_FE(opencensus_core_send_to_daemonclient, arginfo_opencensus_core_send_to_daemon)
     PHP_FE(opencensus_trace_function, arginfo_opencensus_trace_function)
     PHP_FE(opencensus_trace_method, arginfo_opencensus_trace_method)
-    PHP_FE(opencensus_trace_list, NULL)
+    PHP_FE(opencensus_trace_list, arginfo_void)
     PHP_FE(opencensus_trace_begin, arginfo_opencensus_trace_begin)
-    PHP_FE(opencensus_trace_finish, NULL)
-    PHP_FE(opencensus_trace_clear, NULL)
+    PHP_FE(opencensus_trace_finish, arginfo_void)
+    PHP_FE(opencensus_trace_clear, arginfo_void)
     PHP_FE(opencensus_trace_set_context, arginfo_opencensus_trace_set_context)
-    PHP_FE(opencensus_trace_context, NULL)
+    PHP_FE(opencensus_trace_context, arginfo_void)
     PHP_FE(opencensus_trace_add_attribute, arginfo_opencensus_trace_add_attribute)
     PHP_FE(opencensus_trace_add_annotation, arginfo_opencensus_trace_add_annotation)
     PHP_FE(opencensus_trace_add_link, arginfo_opencensus_trace_add_link)
@@ -122,9 +126,6 @@ zend_module_entry opencensus_module_entry = {
 };
 
 #ifdef COMPILE_DL_OPENCENSUS
-#ifdef ZTS
-ZEND_TSRMLS_CACHE_DEFINE()
-#endif
 ZEND_GET_MODULE(opencensus)
 #endif
 
@@ -149,9 +150,6 @@ PHP_MINFO_FUNCTION(opencensus)
  */
 PHP_GINIT_FUNCTION(opencensus)
 {
-#if defined(COMPILE_DL_OPENCENSUS) && defined(ZTS)
-	ZEND_TSRMLS_CACHE_UPDATE()
-#endif
     opencensus_trace_ginit();
 }
 /* }}} */
@@ -168,9 +166,6 @@ PHP_GSHUTDOWN_FUNCTION(opencensus)
  */
 PHP_MINIT_FUNCTION(opencensus)
 {
-#if defined(COMPILE_DL_OPENCENSUS) && defined(ZTS)
-	ZEND_TSRMLS_CACHE_UPDATE()
-#endif
 	REGISTER_INI_ENTRIES();
 
 #ifndef PHP_WIN32