From bf134fa6de7411f5754c057ea141c5223c6665e6 Mon Sep 17 00:00:00 2001
From: Trent Steel <trsteel88@gmail.com>
Date: Mon, 3 Nov 2014 11:01:42 +1000
Subject: [PATCH] Always return options to default

hasHtmlHeader and hasHtmlFooter must return to their default state each time handleOptions() is called. Otherwise, if you generate 2 pdf files within 1 request (1 with a footer and 1 without it will throw an error).

Consider the following:

```php
$snappyPdf->generateFromHtml($pdf1Html, $pdf1File, array(
    'page-size'    => 'A5',
    'margin-right' => 0,
    'margin-left'  => 0,
    'footer-html'  => $footer
), true);

$snappyPdf->generateFromHtml($pdf2Html, $pdf2File, array(
    'page-size'    => 'A5',
    'margin-right' => 0,
    'margin-left'  => 0
), true);

```

When the second pdf is generated the following error is generated:

```Notice: Undefined index: footer-html in /usr/local/zend/apache2/htdocs/lighting-illusions/v3/vendor/knplabs/knp-snappy/src/Knp/Snappy/Pdf.php line 66```

This is because the first file generated is changing the protected $hasHtmlFooter value to true but there is no footer available.
---
 src/Knp/Snappy/Pdf.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Knp/Snappy/Pdf.php b/src/Knp/Snappy/Pdf.php
index be2ee771..788b20b3 100644
--- a/src/Knp/Snappy/Pdf.php
+++ b/src/Knp/Snappy/Pdf.php
@@ -29,6 +29,9 @@ public function __construct($binary = null, array $options = array())
      */
     protected function handleOptions(array $options = array())
     {
+        $this->hasHtmlHeader = false;
+        $this->hasHtmlFooter = false;
+        
         $headerHtml = isset($options['header-html']) ? $options['header-html'] : null;
         if (null !== $headerHtml && !filter_var($headerHtml, FILTER_VALIDATE_URL) && !$this->isFile($headerHtml)) {
             $options['header-html'] = $this->createTemporaryFile($headerHtml, 'html');