Update database_transaction_edit.php

app/database_transactions/database_transaction_edit.php

@@ -359,6 +359,7 @@
 	//this adds old and new values to the array
 	function array_difference($array1, $array2) {
 		$difference = array();
+		if (is_array($array1)) {
 			foreach($array1 as $key => $value) {
 				if(is_array($array2[$key])) {
 					$difference[$key] = array_difference($array1[$key], $array2[$key]);
@@ -367,6 +368,8 @@
 				  	$difference[$key]['old'] = $value;
 				}
 			}
+		}
+		if (is_array($array2)) {
 			foreach($array2 as $key => $value) {
 				if(is_array($value)) {
 					$difference[$key] = array_difference($array1[$key], $array2[$key]);
@@ -375,6 +378,7 @@
 					$difference[$key]['new'] = $value;
 				}
 			}
+		}
 		return $difference;
 	}