Add ARP ping option

src/Nmap/Nmap.php

@@ -35,6 +35,8 @@ class Nmap
 
     private $treatHostsAsOnline = false;
 
+    private $enableArpPing      = false;
+
     private $executable;
 
     private $timeout = 60;
@@ -106,6 +108,10 @@ public function scan(array $targets, array $ports = array())
             $options[] = '-Pn';
         }
 
+        if (true === $this->enableArpPing) {
+            $options[] = '-PR';
+        }
+
         $options[] = '-oX';
         $command   = sprintf('%s %s %s %s',
             $this->executable,
@@ -159,6 +165,18 @@ public function enableVerbose($enable = true)
         return $this;
     }
 
+    /**
+     * @param boolean $enable
+     *
+     * @return Nmap
+     */
+    public function enableArpPing($enable = true)
+    {
+        $this->enableArpPing = $enable;
+
+        return $this;
+    }
+
     /**
      * @param boolean $disable
      *

tests/Nmap/Tests/NmapTest.php

@@ -222,6 +222,22 @@ public function testScanWithTreatHostsAsOnline()
         $hosts = $nmap->treatHostsAsOnline()->scan(array('williamdurand.fr'));
     }
 
+    public function testScanWithEnableArpPing()
+    {
+        $outputFile = __DIR__ . '/Fixtures/test_scan.xml';
+        $expectedCommand = sprintf("nmap -PR -oX '%s' 'williamdurand.fr'", $outputFile);
+
+        $executor = $this->getProcessExecutorMock();
+        $executor
+            ->expects($this->at(1))
+            ->method('execute')
+            ->with($this->equalTo($expectedCommand))
+            ->will($this->returnValue(0));
+
+        $nmap = new Nmap($executor, $outputFile);
+        $hosts = $nmap->enableArpPing()->scan(array('williamdurand.fr'));
+    }
+
     public function testScanWithDefaultTimeout()
     {
         $outputFile = __DIR__ . '/Fixtures/test_scan.xml';