works only on PHP 7.1 and higher

Author: makasim

pkg/amqp-tools/SignalSocketHelper.php

@@ -26,6 +26,11 @@ public function __construct()
 
     public function beforeSocket()
     {
+        // PHP 7.1 and higher
+        if (false == function_exists('pcntl_signal_get_handler')) {
+            return;
+        }
+
         if ($this->handlers) {
             throw new \LogicException('The handlers property should be empty but it is not. The afterSocket method might not have been called.');
         }
@@ -52,6 +57,11 @@ public function beforeSocket()
 
     public function afterSocket()
     {
+        // PHP 7.1 and higher
+        if (false == function_exists('pcntl_signal_get_handler')) {
+            return;
+        }
+
         $this->wasThereSignal = null;
 
         foreach ($this->signals as $signal) {

pkg/amqp-tools/Tests/SignalSocketHelperTest.php

@@ -20,6 +20,10 @@ public function setUp()
     {
         parent::setUp();
 
+        if (false == function_exists('pcntl_signal_get_handler')) {
+            $this->markTestSkipped('PHP 7.1 and higher');
+        }
+
         $this->backupSigTermHandler = pcntl_signal_get_handler(SIGTERM);
         $this->backupSigIntHandler = pcntl_signal_get_handler(SIGINT);