PHPLIB-1485: Drop support for MongoDB 3.6

.evergreen/config.yml

@@ -79,7 +79,6 @@ include:
   - filename: .evergreen/config/generated/test/local-4.4.yml
   - filename: .evergreen/config/generated/test/local-4.2.yml
   - filename: .evergreen/config/generated/test/local-4.0.yml
-  - filename: .evergreen/config/generated/test/local-3.6.yml
   - filename: .evergreen/config/generated/test/load-balanced-latest.yml
   - filename: .evergreen/config/generated/test/load-balanced-rapid.yml
   - filename: .evergreen/config/generated/test/load-balanced-8.0.yml

.evergreen/config/generate-config.php

@@ -27,7 +27,6 @@
     '4.4',
     '4.2',
     '4.0',
-    '3.6',
 ];
 
 // Server versions

.evergreen/config/templates/test-variant/legacy-php-full.yml

@@ -15,10 +15,10 @@ buildvariants:
         name: "build-php-%phpVersion%"
     tasks:
       # Remember to add new major versions here as they are released
-      - ".standalone .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.8.0"
-      - ".replicaset .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.8.0"
-      - ".sharded .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.8.0"
-      - ".loadbalanced .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.8.0"
+      - ".standalone .local !.csfle !.4.0 !.4.2 !.4.4 !.8.0"
+      - ".replicaset .local !.csfle !.4.0 !.4.2 !.4.4 !.8.0"
+      - ".sharded .local !.csfle !.4.0 !.4.2 !.4.4 !.8.0"
+      - ".loadbalanced .local !.csfle !.4.0 !.4.2 !.4.4 !.8.0"
       - "test_serverless_task_group"
       - "test_serverless_proxy_task_group"
       - "test-atlas-data-lake"

.evergreen/config/templates/test-variant/lowest.yml

@@ -12,4 +12,4 @@ buildvariants:
       - variant: "build-debian92"
         name: "build-php-%phpVersion%-lowest"
     tasks:
-      - ".replicaset .local .3.6 !.csfle"
+      - ".replicaset .local .4.0 !.csfle"

.evergreen/config/templates/test-variant/modern-php-full.yml

@@ -13,10 +13,10 @@ buildvariants:
       - variant: "build-debian12"
         name: "build-php-%phpVersion%"
     tasks:
-      - ".standalone .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
-      - ".replicaset .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
-      - ".sharded .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
-      - ".loadbalanced .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".standalone .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".replicaset .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".sharded .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".loadbalanced .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
       - "test_serverless_task_group"
       - "test_serverless_proxy_task_group"
       - "test-atlas-data-lake"
@@ -35,10 +35,10 @@ buildvariants:
         name: "build-php-%phpVersion%"
     tasks:
       # Remember to add new major versions here as they are released
-      - ".standalone .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.7.0 !.8.0 !.rapid !.latest"
-      - ".replicaset .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.7.0 !.8.0 !.rapid !.latest"
-      - ".sharded .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.7.0 !.8.0 !.rapid !.latest"
-      - ".loadbalanced .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.7.0 !.8.0 !.rapid !.latest"
+      - ".standalone .local !.csfle !.4.0 !.4.2 !.4.4 !.7.0 !.8.0 !.rapid !.latest"
+      - ".replicaset .local !.csfle !.4.0 !.4.2 !.4.4 !.7.0 !.8.0 !.rapid !.latest"
+      - ".sharded .local !.csfle !.4.0 !.4.2 !.4.4 !.7.0 !.8.0 !.rapid !.latest"
+      - ".loadbalanced .local !.csfle !.4.0 !.4.2 !.4.4 !.7.0 !.8.0 !.rapid !.latest"
 
   # Test versions < 5.0
   - name: test-debian92-php-%phpVersion%-local

.evergreen/config/templates/test-variant/phpc.yml

@@ -12,10 +12,10 @@ buildvariants:
       - variant: "build-debian12"
         name: "build-php-%phpVersion%-next-stable"
     tasks:
-      - ".standalone .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
-      - ".replicaset .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
-      - ".sharded .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
-      - ".loadbalanced .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".standalone .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".replicaset .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".sharded .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".loadbalanced .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
       - "test_serverless_task_group"
       - "test_serverless_proxy_task_group"
       - "test-atlas-data-lake"
@@ -32,10 +32,10 @@ buildvariants:
       - variant: "build-debian12"
         name: "build-php-%phpVersion%-next-minor"
     tasks:
-      - ".standalone .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
-      - ".replicaset .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
-      - ".sharded .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
-      - ".loadbalanced .local !.csfle !.3.6 !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".standalone .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".replicaset .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".sharded .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
+      - ".loadbalanced .local !.csfle !.4.0 !.4.2 !.4.4 !.5.0 !.6.0"
       - "test_serverless_task_group"
       - "test_serverless_proxy_task_group"
       - "test-atlas-data-lake"

src/Operation/Explain.php

@@ -28,7 +28,6 @@
 use function current;
 use function is_array;
 use function is_string;
-use function MongoDB\server_supports_feature;
 
 /**
  * Operation for the explain command.
@@ -42,8 +41,6 @@ class Explain implements Executable
     public const VERBOSITY_EXEC_STATS = 'executionStats';
     public const VERBOSITY_QUERY = 'queryPlanner';
 
-    private const WIRE_VERSION_FOR_AGGREGATE = 7;
-
     private string $databaseName;
 
     private Explainable $explainable;
@@ -106,10 +103,6 @@ public function __construct(string $databaseName, Explainable $explainable, arra
      */
     public function execute(Server $server)
     {
-        if ($this->explainable instanceof Aggregate && ! server_supports_feature($server, self::WIRE_VERSION_FOR_AGGREGATE)) {
-            throw UnsupportedException::explainNotSupported();
-        }
-
         $cursor = $server->executeCommand($this->databaseName, $this->createCommand(), $this->createOptions());
 
         if (isset($this->options['typeMap'])) {

src/Operation/Watch.php

@@ -47,7 +47,6 @@
 use function MongoDB\Driver\Monitoring\removeSubscriber;
 use function MongoDB\is_document;
 use function MongoDB\select_server;
-use function MongoDB\server_supports_feature;
 
 /**
  * Operation for creating a change stream with the aggregate command.
@@ -69,8 +68,6 @@ class Watch implements Executable, /* @internal */ CommandSubscriber
     public const FULL_DOCUMENT_BEFORE_CHANGE_WHEN_AVAILABLE = 'whenAvailable';
     public const FULL_DOCUMENT_BEFORE_CHANGE_REQUIRED = 'required';
 
-    private const WIRE_VERSION_FOR_START_AT_OPERATION_TIME = 7;
-
     private Aggregate $aggregate;
 
     private array $aggregateOptions;
@@ -470,10 +467,6 @@ private function shouldCaptureOperationTime(Server $server): bool
             return false;
         }
 
-        if (! server_supports_feature($server, self::WIRE_VERSION_FOR_START_AT_OPERATION_TIME)) {
-            return false;
-        }
-
         return true;
     }
 }

tests/Operation/WatchFunctionalTest.php

@@ -33,7 +33,6 @@
 use function assert;
 use function bin2hex;
 use function microtime;
-use function MongoDB\server_supports_feature;
 use function sprintf;
 
 /**
@@ -46,8 +45,6 @@ class WatchFunctionalTest extends FunctionalTestCase
     public const INTERRUPTED = 11601;
     public const NOT_PRIMARY = 10107;
 
-    private static int $wireVersionForStartAtOperationTime = 7;
-
     private array $defaultOptions = ['maxAwaitTimeMS' => 500];
 
     public function setUp(): void
@@ -340,10 +337,6 @@ private function assertResumeAfter($expectedResumeToken, stdClass $command): voi
      */
     public function testResumeBeforeReceivingAnyResultsIncludesStartAtOperationTime(): void
     {
-        if (! $this->isStartAtOperationTimeSupported()) {
-            $this->markTestSkipped('startAtOperationTime is not supported');
-        }
-
         $this->skipIfServerVersion('>=', '4.0.7', 'postBatchResumeToken takes precedence over startAtOperationTime');
 
         $operation = new Watch($this->manager, $this->getDatabaseName(), $this->getCollectionName(), [], $this->defaultOptions);
@@ -1653,11 +1646,6 @@ private function insertDocument($document): void
         $this->assertEquals(1, $writeResult->getInsertedCount());
     }
 
-    private function isStartAtOperationTimeSupported()
-    {
-        return server_supports_feature($this->getPrimaryServer(), self::$wireVersionForStartAtOperationTime);
-    }
-
     private function advanceCursorUntilValid(Iterator $iterator, $limitOnShardedClusters = 10): void
     {
         if (! $this->isShardedCluster()) {