add e2e test for PHP language-detection (#33639)

test/new-e2e/tests/language-detection/language_detection_test.go

@@ -56,6 +56,7 @@ func (s *languageDetectionSuite) SetupSuite() {
 	s.BaseSuite.SetupSuite()
 
 	s.installPython()
+	s.installPHP()
 }
 
 func (s *languageDetectionSuite) checkDetectedLanguage(command string, language string, source string) {

test/new-e2e/tests/language-detection/php_test.go

@@ -0,0 +1,32 @@
+// Unless explicitly stated otherwise all files in this repository are licensed
+// under the Apache License Version 2.0.
+// This product includes software developed at Datadog (https://www.datadoghq.com/).
+// Copyright 2016-present Datadog, Inc.
+
+package languagedetection
+
+import (
+	"strings"
+
+	"github.com/DataDog/test-infra-definitions/components/datadog/agentparams"
+	"github.com/stretchr/testify/require"
+
+	awshost "github.com/DataDog/datadog-agent/test/new-e2e/pkg/provisioners/aws/host"
+)
+
+func (s *languageDetectionSuite) installPHP() {
+	s.Env().RemoteHost.MustExecute("sudo apt-get -y install php")
+	phpVersion := s.Env().RemoteHost.MustExecute("php -v")
+	require.True(s.T(), strings.HasPrefix(phpVersion, "PHP"))
+}
+
+func (s *languageDetectionSuite) TestPHPDetectionCoreAgent() {
+	s.UpdateEnv(awshost.ProvisionerNoFakeIntake(awshost.WithAgentOptions(agentparams.WithAgentConfig(coreConfigStr))))
+	s.runPHP()
+	s.checkDetectedLanguage("php", "php", "local_process_collector")
+}
+
+func (s *languageDetectionSuite) runPHP() {
+	s.Env().RemoteHost.MustExecute("echo -e '<?php sleep(60);' > prog.php")
+	s.Env().RemoteHost.MustExecute("nohup php prog.php >myscript.log 2>&1 </dev/null &")
+}