Reorganize project part 2

extensions.php

@@ -0,0 +1,63 @@
+<?php
+
+function FindObjectInArrayByPropertyValue($array, $propertyName, $propertyValue)
+{
+	foreach($array as $object)
+	{
+		if($object->{$propertyName} == $propertyValue)
+		{
+			return $object;
+		}
+	}
+
+	return null;
+}
+
+function FindAllObjectsInArrayByPropertyValue($array, $propertyName, $propertyValue, $operator = '==')
+{
+	$returnArray = array();
+
+	foreach($array as $object)
+	{
+		switch($operator)
+		{
+			case '==':
+				if($object->{$propertyName} == $propertyValue)
+				{
+					$returnArray[] = $object;
+				}
+				break;
+			case '>':
+				if($object->{$propertyName} > $propertyValue)
+				{
+					$returnArray[] = $object;
+				}
+				break;
+			case '<':
+				if($object->{$propertyName} < $propertyValue)
+				{
+					$returnArray[] = $object;
+				}
+				break;
+		}
+	}
+
+	return $returnArray;
+}
+
+function SumArrayValue($array, $propertyName)
+{
+	$sum = 0;
+	foreach($array as $object)
+	{
+		$sum += $object->{$propertyName};
+	}
+
+	return $sum;
+}
+
+function GetClassConstants($className)
+{
+	$r = new ReflectionClass($className);
+	return $r->getConstants();
+}