version 1.5

2024-01-11 14:04:25 +01:00
parent 0ee8291846
commit 4492763b78
756 changed files with 209957 additions and 2 deletions
@@ -0,0 +1,97 @@
+<?php
+
+/**
+ * Shows how to query data into `FluxTable`
+ */
+
+require __DIR__ . '/../vendor/autoload.php';
+
+use InfluxDB2\Client;
+use InfluxDB2\Model\DeletePredicateRequest;
+use InfluxDB2\Point;
+use InfluxDB2\Service\DeleteService;
+
+$org = 'my-org';
+$bucket = 'my-bucket';
+$token = 'my-token';
+
+//
+// Creating client
+//
+$client = new Client([
+    "url" => "http://localhost:8086",
+    "token" => $token,
+    "bucket" => $bucket,
+    "org" => $org,
+    "precision" => InfluxDB2\Model\WritePrecision::S
+]);
+
+//
+// Delete data from influxDB
+//
+$service = $client->createService(DeleteService::class);
+
+$predicate = new DeletePredicateRequest();
+$predicate->setStart(DateTime::createFromFormat('Y', '1900'));
+$predicate->setStop(new DateTime());
+$predicate->setPredicate("_measurement=\"weather\"");
+$service->postDelete($predicate, null, $org, $bucket);
+
+//
+// Write test data into InfluxDB
+//
+$writeApi = $client->createWriteApi();
+$pointArray = [];
+
+$dateNow = new DateTime('NOW');
+for ($i = 1; $i <= 10; $i++) {
+    $point = Point::measurement("weather")
+        ->addTag("location", "London")
+        ->addField("temperature", rand(-5, 20))
+        ->time($dateNow->getTimestamp());
+    $pointArray[] = $point;
+    $dateNow->sub(new DateInterval('P1D'));
+}
+
+$writeApi->write($pointArray);
+$writeApi->close();
+
+//
+// Get query client
+//
+$queryApi = $client->createQueryApi();
+
+//
+// Synchronously executes query and return result as an Array of FluxTables
+//
+$result = $queryApi->query(
+    'from(bucket: "my-bucket")
+                |> range(start: -8d)
+                |> filter(fn: (r) => r["_measurement"] == "weather")'
+);
+
+//
+// Encoding to JSON with json_encode
+//
+printf("\n\n----------------------- Query (JsonEncode) -----------------------\n\n");
+echo json_encode($result, JSON_PRETTY_PRINT);
+
+//
+// Working with returned data in FluxTables
+//
+printf("\n\n----------------------- Query (FluxTables) -----------------------\n\n");
+foreach ($result as $table) {
+    foreach ($table->records as $record) {
+        $location = $record["location"];
+        $temperature = $record->getValue();
+        try {
+            $time = (new DateTime($record->getTime()))->format('d.m.Y');
+        } catch (Exception $e) {
+            $time = $record->getTime();
+        }
+        $measurement = $record->getMeasurement();
+        print "$measurement in $location at $time - Temperature is $temperature °C\n";
+    }
+}
+
+$client->close();