diff --git a/src/LynX39/LaraPdfMerger/tcpdf/include/tcpdf_filters.php b/src/LynX39/LaraPdfMerger/tcpdf/include/tcpdf_filters.php
index dfb80c5..3bb89c0 100644
--- a/src/LynX39/LaraPdfMerger/tcpdf/include/tcpdf_filters.php
+++ b/src/LynX39/LaraPdfMerger/tcpdf/include/tcpdf_filters.php
@@ -279,7 +279,7 @@ public static function decodeFilterLZWDecode($data) {
 		// convert string to binary string
 		$bitstring = '';
 		for ($i = 0; $i < $data_length; ++$i) {
-			$bitstring .= sprintf('%08b', ord($data{$i}));
+			$bitstring .= sprintf('%08b', ord($data[$i]));
 		}
 		// get the number of bits
 		$data_length = strlen($bitstring);
@@ -376,7 +376,7 @@ public static function decodeFilterRunLengthDecode($data) {
 		$i = 0;
 		while($i < $data_length) {
 			// get current byte value
-			$byte = ord($data{$i});
+			$byte = ord($data[$i]);
 			if ($byte == 128) {
 				// a length value of 128 denote EOD
 				break;
@@ -389,7 +389,7 @@ public static function decodeFilterRunLengthDecode($data) {
 			} else {
 				// if length is in the range 129 to 255,
 				// the following single byte shall be copied 257 - length (2 to 128) times during decompression
-				$decoded .= str_repeat($data{($i + 1)}, (257 - $byte));
+				$decoded .= str_repeat($data[($i + 1)], (257 - $byte));
 				// move to next block
 				$i += 2;
 			}
diff --git a/src/LynX39/LaraPdfMerger/tcpdf/include/tcpdf_images.php b/src/LynX39/LaraPdfMerger/tcpdf/include/tcpdf_images.php
index c2e3c36..018f243 100644
--- a/src/LynX39/LaraPdfMerger/tcpdf/include/tcpdf_images.php
+++ b/src/LynX39/LaraPdfMerger/tcpdf/include/tcpdf_images.php
@@ -315,7 +315,7 @@ public static function _parsepng($file) {
 					if ($n > 0) {
 						$trns = array();
 						for ($i = 0; $i < $n; ++ $i) {
-							$trns[] = ord($t{$i});
+							$trns[] = ord($t[$i]);
 						}
 					}
 				}
diff --git a/src/LynX39/LaraPdfMerger/tcpdf/tcpdi_parser.php b/src/LynX39/LaraPdfMerger/tcpdf/tcpdi_parser.php
index cd71661..d8ae6dc 100755
--- a/src/LynX39/LaraPdfMerger/tcpdf/tcpdi_parser.php
+++ b/src/LynX39/LaraPdfMerger/tcpdf/tcpdi_parser.php
@@ -709,11 +709,11 @@ protected function getRawObject($offset=0, $data=null) {
         $objtype = ''; // object type to be returned
         $objval = ''; // object value to be returned
         // skip initial white space chars: \x00 null (NUL), \x09 horizontal tab (HT), \x0A line feed (LF), \x0C form feed (FF), \x0D carriage return (CR), \x20 space (SP)
-        while (strspn($data{$offset}, "\x00\x09\x0a\x0c\x0d\x20") == 1) {
+        while (strspn($data[$offset], "\x00\x09\x0a\x0c\x0d\x20") == 1) {
             $offset++;
         }
         // get first char
-        $char = $data{$offset};
+        $char = $data[$offset];
         // get object type
         switch ($char) {
             case '%': { // \x25 PERCENT SIGN
@@ -744,10 +744,10 @@ protected function getRawObject($offset=0, $data=null) {
                 if ($char == '(') {
                     $open_bracket = 1;
                     while ($open_bracket > 0) {
-                        if (!isset($data{$strpos})) {
+                        if (!isset($data[$strpos])) {
                             break;
                         }
-                        $ch = $data{$strpos};
+                        $ch = $data[$strpos];
                         switch ($ch) {
                             case '\\': { // REVERSE SOLIDUS (5Ch) (Backslash)
                                 // skip next character
@@ -792,7 +792,7 @@ protected function getRawObject($offset=0, $data=null) {
             }
             case '<':   // \x3C LESS-THAN SIGN
             case '>': { // \x3E GREATER-THAN SIGN
-                if (isset($data{($offset + 1)}) AND ($data{($offset + 1)} == $char)) {
+                if (isset($data[($offset + 1)]) AND ($data[($offset + 1)] == $char)) {
                     // dictionary object
                     $objtype = PDF_TYPE_DICTIONARY;
                     if ($char == '<') {
@@ -815,7 +815,7 @@ protected function getRawObject($offset=0, $data=null) {
                 break;
             }
             default: {
-                $frag = $data{$offset} . @$data{$offset+1} . @$data{$offset+2} . @$data{$offset+3};
+                $frag = $data[$offset] . @$data[$offset+1] . @$data[$offset+2] . @$data[$offset+3];
                 switch ($frag) {
                     case 'endo':
                         // indirect object
@@ -892,16 +892,16 @@ private function getDictValue($offset, &$data) {
         $dict = '';
         $offset += 2;
         do {
-            if ($data{$offset} == '>' && $data{$offset+1} == '>') {
+            if ($data[$offset] == '>' && $data[$offset+1] == '>') {
                 $i--;
                 $dict .= '>>';
                 $offset += 2;
-            } else if ($data{$offset} == '<' && $data{$offset+1} == '<') {
+            } else if ($data[$offset] == '<' && $data[$offset+1] == '<') {
                 $i++;
                 $dict .= '<<';
                 $offset += 2;
             } else {
-                $dict .= $data{$offset};
+                $dict .= $data[$offset];
                 $offset++;
             }
         } while ($i>0);
@@ -1390,7 +1390,8 @@ private function _getPageRotation($obj) { // $obj = /Page
                 return false;
             } else {
                 $res = $this->_getPageRotation($obj[1][1]['/Parent']);
-                if ($res[0] == PDF_TYPE_OBJECT)
+
+                if (is_array($res) && $res[0] == PDF_TYPE_OBJECT)
                     return $res[1];
                 return $res;
             }