adding enum for semconv versions

script/semantic-conventions/semconv.sh

@@ -36,7 +36,7 @@ git reset --hard FETCH_HEAD
 cd "${SCRIPT_DIR}"
 
 mkdir -p "${CODE_DIR}"
-find "${CODE_DIR}" -name "*.php" -exec rm -f {} \;
+find "${CODE_DIR}" -name "*.php" ! -name "Version.php" -exec rm -f {} \;
 
 # Trace
 docker run --rm \

src/SemConv/Version.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\SemConv;
+
+enum Version: string
+{
+    case VERSION_1_25_0 = '1.25.0';
+    case VERSION_1_24_0 = '1.24.0';
+    case VERSION_1_23_1 = '1.23.1';
+    case VERSION_1_23_0 = '1.23.0';
+    case VERSION_1_22_0 = '1.22.0';
+    case VERSION_1_21_0 = '1.21.0';
+
+    public function url(): string
+    {
+        return 'https://opentelemetry.io/schemas/' . $this->value;
+    }
+}

tests/Unit/SemConv/VersionTest.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Unit\SemConv;
+
+use OpenTelemetry\SemConv\Version;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(Version::class)]
+class VersionTest extends TestCase
+{
+    public function test_url(): void
+    {
+        $url = Version::VERSION_1_25_0->url();
+        $this->assertSame('https://opentelemetry.io/schemas/1.25.0', $url);
+    }
+}