Ensure that range related functions had a valid range to work with

Classes/PHPExcel/Cell.php

@@ -42,6 +42,14 @@ class PHPExcel_Cell
 	 */
 	private static $_valueBinder = NULL;
 
+
+	/**
+	*	Default range variable constant
+	*
+	*	@var	string
+	*/
+	const DEFAULT_RANGE = 'A1:A1';
+
 	/**
 	 *	Column of the cell
 	 *
@@ -600,6 +608,11 @@ public static function absoluteCoordinate($pCoordinateString = 'A1')
 	 */
 	public static function splitRange($pRange = 'A1:A1')
 	{
+		// Ensure $pRange is a valid range		
+		if(empty($pRange)){
+			$pRange = self::DEFAULT_RANGE;
+		}
+
 		$exploded = explode(',', $pRange);
 		$counter = count($exploded);
 		for ($i = 0; $i < $counter; ++$i) {
@@ -642,6 +655,11 @@ public static function buildRange($pRange)
 	 */
 	public static function rangeBoundaries($pRange = 'A1:A1')
 	{
+		// Ensure $pRange is a valid range		
+		if(empty($pRange)){
+			$pRange = self::DEFAULT_RANGE;
+		}
+
 		// Uppercase coordinate
 		$pRange = strtoupper($pRange);
 
@@ -686,6 +704,11 @@ public static function rangeDimension($pRange = 'A1:A1')
 	 */
 	public static function getRangeBoundaries($pRange = 'A1:A1')
 	{
+		// Ensure $pRange is a valid range		
+		if(empty($pRange)){
+			$pRange = self::DEFAULT_VALUE;
+		}
+
 		// Uppercase coordinate
 		$pRange = strtoupper($pRange);
 

Classes/PHPExcel/ReferenceHelper.php

@@ -312,7 +312,8 @@ public function insertNewBefore($pBefore = 'A1', $pNumCols = 0, $pNumRows = 0, P
 
 
 		// Update worksheet: autofilter
-		if ($pSheet->getAutoFilter()->getRange() !== '') {
+		$range = $pSheet->getAutoFilter()->getRange();
+		if (!empty($range)) {
 			$pSheet->setAutoFilter( $this->updateCellReference($pSheet->getAutoFilter()->getRange(), $pBefore, $pNumCols, $pNumRows) );
 		}
 

Classes/PHPExcel/Writer/Excel5.php

@@ -958,4 +958,4 @@ private function _writeSummaryInformation(){
 
 		return $data;
 	}
-}
+}