1 files changed, 40 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/Common/Configuration/Resolver/EnvironmentResolver.php b/vendor/open-telemetry/sdk/Common/Configuration/Resolver/EnvironmentResolver.php
new file mode 100644
index 000000000..453f98e39
--- /dev/null
+++ b/vendor/open-telemetry/sdk/Common/Configuration/Resolver/EnvironmentResolver.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SDK\Common\Configuration\Resolver;
+
+use OpenTelemetry\SDK\Common\Configuration\Configuration;
+
+/**
+ * @internal
+ */
+class EnvironmentResolver implements ResolverInterface
+{
+    public function hasVariable(string $variableName): bool
+    {
+        if (!Configuration::isEmpty($_SERVER[$variableName] ?? null)) {
+            return true;
+        }
+        $env = getenv($variableName);
+        if ($env === false) {
+            return false;
+        }
+
+        return !Configuration::isEmpty($env);
+    }
+
+    /**
+     * @psalm-suppress InvalidReturnStatement
+     * @psalm-suppress InvalidReturnType
+     */
+    public function retrieveValue(string $variableName)
+    {
+        $value = getenv($variableName);
+        if ($value === false) {
+            $value = $_SERVER[$variableName] ?? null;
+        }
+
+        return $value;
+    }
+}