diff --git a/hello-world.php b/hello-world.php
index 4c88d22..d2f3c6e 100644
--- a/hello-world.php
+++ b/hello-world.php
@@ -4,10 +4,14 @@
 // This is only a SKELETON file for the "Hello World" exercise.
 // It's been provided as a convenience to get you started writing code faster.
 //
-
-function helloWorld($name)
+function HelloWorld($name)
 {
-    //
-    // YOUR CODE GOES HERE
-    //
+  if($name == null){
+    echo "Hello,world";
+  }
+  else {
+    echo "Hello," . "  " . $name;
+  }
 }
+ HelloWorld("Alice");
+  ?>