Added more header stuff (requires and uses) along with a forgotten PartialPlay

PHPSkills/FactorGraphs/FactorGraphLayer.php

@@ -1,6 +1,8 @@
 <?php
 namespace Moserware\Skills\FactorGraphs;
 
+require_once(dirname(__FILE__) . "Schedule.php");
+
 abstract class FactorGraphLayer
 {
     private $_localFactors = array();
@@ -63,5 +65,4 @@ abstract class FactorGraphLayer
     }
 }
 
-
 ?>

PHPSkills/FactorGraphs/FactorList.php

@@ -2,6 +2,8 @@
 
 namespace Moserware\Skills\FactorGraphs;
 
+require_once(dirname(__FILE__) . "Factor.php");
+
 /// <summary>
 /// Helper class for computing the factor graph's normalization constant.
 /// </summary>

PHPSkills/FactorGraphs/VariableFactory.php

@@ -2,6 +2,8 @@
 
 namespace Moserware\Skills\FactorGraphs;
 
+require_once(dirname(__FILE__) . "Variable.php");
+
 class VariableFactory
 {
     // using a Func<TValue> to encourage fresh copies in case it's overwritten
@@ -23,6 +25,6 @@ class VariableFactory
         $newVar = new KeyedVariable($key, $this->_variablePriorInitializer());
         return $newVar;
     }
-}s
+}
 
 ?>