From 6287d7b0ec9d72d49eccd70b9181d05ff83a6092 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20Vo=C5=99=C3=AD=C5=A1ek?= <mvorisek@mvorisek.cz>
Date: Tue, 21 Jun 2022 14:11:33 +0200
Subject: [PATCH] Run with parallel runner only when proc_open is not disabled

---
 src/Command/AnalyserRunner.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Command/AnalyserRunner.php b/src/Command/AnalyserRunner.php
index 633b11e344..079b4d403b 100644
--- a/src/Command/AnalyserRunner.php
+++ b/src/Command/AnalyserRunner.php
@@ -12,6 +12,7 @@
 use function array_filter;
 use function array_values;
 use function count;
+use function function_exists;
 use function is_file;
 
 class AnalyserRunner
@@ -58,7 +59,7 @@ public function runAnalyser(
 
 		if (
 			!$debug
-			&& $allowParallel
+			&& $allowParallel && function_exists('proc_open')
 			&& $mainScript !== null
 			&& $schedule->getNumberOfProcesses() > 0
 		) {