Fixed some issues found by phpstan

Author: mullen2

phpstan.neon

@@ -1,4 +1,4 @@
 parameters:
-	level: 1
+	level: 2
 	paths:
 		- src

src/ErrorHandlerInterface.php

@@ -65,5 +65,11 @@ interface ErrorHandlerInterface
      * @param \Throwable $previousException the previous exception that occurred that
      *     caused this exception, if any.
      */
-    public function throwException($message, $code, $connectionErrorNumber, $httpStatusCode, $previousException);
+    public function throwException(
+        $message,
+        $code,
+        $connectionErrorNumber = null,
+        $httpStatusCode = null,
+        $previousException = null
+    );
 }

src/RedCapApiConnectionInterface.php

@@ -142,7 +142,7 @@ public function getConnectionTimeoutInSeconds();
     /**
      * Sets the timeout for time to make a connection in seconds.
      *
-     * @param integer connection timeout in seconds.
+     * @return integer connection timeout in seconds.
      */
     public function setConnectionTimeoutInSeconds($connectionTimeoutInSeconds);
 }

src/RedCapProject.php

@@ -2883,22 +2883,20 @@ protected function getFileInfo($callInfo)
     {
         $fileInfo = array();
         if (isset($callInfo) && is_array($callInfo) && array_key_exists('content_type', $callInfo)) {
-            if (!empty($callInfo)) {
-                $contentType = $callInfo = explode(';', $callInfo['content_type']);
-                if (count($contentType) >= 1) {
-                    $fileInfo['mime_type'] = trim($contentType[0]);
-                }
-                if (count($contentType) >= 2) {
-                    $fileName = trim($contentType[1]);
-                    # remove starting 'name="' and ending '"'
-                    $fileName = substr($fileName, 6, strlen($fileName) - 7);
-                    $fileInfo['name'] = $fileName;
-                }
-                if (count($contentType) >= 3) {
-                    $charset = trim($contentType[2]);
-                    $charset = substr($charset, 8);
-                    $fileInfo['charset'] = $charset;
-                }
+            $contentType = $callInfo = explode(';', $callInfo['content_type']);
+            if (count($contentType) >= 1) {
+                $fileInfo['mime_type'] = trim($contentType[0]);
+            }
+            if (count($contentType) >= 2) {
+                $fileName = trim($contentType[1]);
+                # remove starting 'name="' and ending '"'
+                $fileName = substr($fileName, 6, strlen($fileName) - 7);
+                $fileInfo['name'] = $fileName;
+            }
+            if (count($contentType) >= 3) {
+                $charset = trim($contentType[2]);
+                $charset = substr($charset, 8);
+                $fileInfo['charset'] = $charset;
             }
         }
         return $fileInfo;