diff --git a/php/qrcode.php b/php/qrcode.php
index ff14f0c..0420533 100644
--- a/php/qrcode.php
+++ b/php/qrcode.php
@@ -64,24 +64,27 @@ function addData($data, $mode = 0) {
         }
 
         switch($mode) {
-
-        case QR_MODE_NUMBER :
-            $this->addDataImpl(new QRNumber($data) );
+          case QR_MODE_NUMBER:
+            $d = new QRNumber($data);
+            $this->addDataImpl($d);
             break;
 
-        case QR_MODE_ALPHA_NUM :
-            $this->addDataImpl(new QRAlphaNum($data) );
+          case QR_MODE_ALPHA_NUM:
+            $d = new QRAlphaNum($data);
+            $this->addDataImpl($d);
             break;
 
-        case QR_MODE_8BIT_BYTE :
-            $this->addDataImpl(new QR8BitByte($data) );
+          case QR_MODE_8BIT_BYTE:
+            $d = new QR8BitByte($data);
+            $this->addDataImpl($d);
             break;
 
-        case QR_MODE_KANJI :
-            $this->addDataImpl(new QRKanji($data) );
+          case QR_MODE_KANJI:
+            $d = new QRKanji($data);
+            $this->addDataImpl($d);
             break;
 
-        default :
+          default:
             trigger_error("mode:$mode", E_USER_ERROR);
         }
     }
@@ -554,6 +557,7 @@ function printHTML($size = "2px") {
 
     public function printSVG($size = 2)
     {
+        $size = (int) $size;
         $width = $this->getModuleCount() * $size;
         $height = $width;
         print('<svg width="' . $width . '" height="' . $height . '" viewBox="0 0 ' . $width . ' ' . $height . '" xmlns="http://www.w3.org/2000/svg">');