diff --git a/src/PHPePub/Core/EPub.php b/src/PHPePub/Core/EPub.php
index bbc6fe0..74c09b1 100644
--- a/src/PHPePub/Core/EPub.php
+++ b/src/PHPePub/Core/EPub.php
@@ -2058,7 +2058,14 @@ function finalize() {
         }
 
         reset($this->ncx->chapterList);
-        list($firstChapterName, $firstChapterNavPoint) = each($this->ncx->chapterList);
+
+
+
+        // list($firstChapterName, $firstChapterNavPoint) = each($this->ncx->chapterList);
+        foreach ($this->ncx->chapterList as $firstChapterName => $firstChapterNavPoint) {
+            break;
+        }
+
         /** @var $firstChapterNavPoint NavPoint */
         $firstChapterFileName = $firstChapterNavPoint->getContentSrc();
         $this->opf->addReference(Reference::TEXT, StringHelper::decodeHtmlEntities($firstChapterName), $firstChapterFileName);
@@ -2156,9 +2163,13 @@ private function finalizeTOC() {
         }
         $tocData .= ">\n";
 
-        while (list($item, $descriptive) = each($this->referencesOrder)) {
+
+            
+        // while (list($item, $descriptive) = each($this->referencesOrder)) {
+        foreach ($this->referencesOrder as $item => $descriptive) {
             if ($item === "text") {
-                while (list($chapterName, $navPoint) = each($this->ncx->chapterList)) {
+                foreach ($this->ncx->chapterList as $chapterName => $navPoint) {
+                // while (list($chapterName, $navPoint) = each($this->ncx->chapterList)) {
                     /** @var $navPoint NavPoint */
                     $fileName = $navPoint->getContentSrc();
                     $level = $navPoint->getLevel() - 2;
@@ -2273,7 +2284,7 @@ function sendBook($fileName) {
             $fileName .= ".epub";
         }
 
-        if (true === $this->zip->sendZip($fileName, "application/epub+zip")) {
+        if (true === $this->zip->sendZip($fileName, "application/epub+zip", $fileName)) {
             return $fileName;
         }
 
diff --git a/src/PHPePub/Core/Structure/Ncx.php b/src/PHPePub/Core/Structure/Ncx.php
index c410faa..ec547cb 100644
--- a/src/PHPePub/Core/Structure/Ncx.php
+++ b/src/PHPePub/Core/Structure/Ncx.php
@@ -355,7 +355,8 @@ function finalizeReferences() {
             $this->rootLevel();
             $this->subLevel($this->referencesTitle, $this->referencesId, $this->referencesClass);
             $refId = 1;
-            while (list($item, $descriptive) = each($this->referencesOrder)) {
+            // while (list($item, $descriptive) = each($this->referencesOrder)) {
+            foreach ($this->referencesOrder as $item => $descriptive) {
                 if (array_key_exists($item, $this->referencesList)) {
                     $name = (empty($this->referencesName[$item]) ? $descriptive : $this->referencesName[$item]);
                     $navPoint = new NavPoint($name, $this->referencesList[$item], "ref-" . $refId++);
@@ -380,7 +381,8 @@ function finalizeEPub3Landmarks() {
                 . "\t\t\t\t<ol>\n";
 
             $li = "";
-            while (list($item, $descriptive) = each($this->referencesOrder)) {
+            foreach ($this->referencesOrder as $item => $descriptive) {
+            // while (list($item, $descriptive) = each($this->referencesOrder)) {
                 if (array_key_exists($item, $this->referencesList)) {
                     $li .= "\t\t\t\t\t<li><a epub:type=\""
                         . $item
diff --git a/src/PHPePub/Core/Structure/OPF/MetaValue.php b/src/PHPePub/Core/Structure/OPF/MetaValue.php
index c087c25..01d2d4e 100644
--- a/src/PHPePub/Core/Structure/OPF/MetaValue.php
+++ b/src/PHPePub/Core/Structure/OPF/MetaValue.php
@@ -97,7 +97,8 @@ function finalize($bookVersion = EPub::BOOK_VERSION_EPUB2) {
         $dc = "\t\t<" . $this->tagName;
 
         if (sizeof($this->attr) > 0) {
-            while (list($name, $content) = each($this->attr)) {
+            // while (list($name, $content) = each($this->attr)) {
+            foreach ($this->attr as $name => $content) {
                 $dc .= " " . $name . "=\"" . $content . "\"";
             }
         }
diff --git a/src/PHPePub/Core/Structure/OPF/Metadata.php b/src/PHPePub/Core/Structure/OPF/Metadata.php
index d182563..90f16ea 100644
--- a/src/PHPePub/Core/Structure/OPF/Metadata.php
+++ b/src/PHPePub/Core/Structure/OPF/Metadata.php
@@ -123,12 +123,18 @@ function finalize($bookVersion = EPub::BOOK_VERSION_EPUB2, $date = null) {
         }
 
         foreach ($this->metaProperties as $data) {
-            list($name, $content) = each($data);
+            // list($name, $content) = each($data);
+            foreach ($data as $name => $content) {
+                break;
+            }
             $metadata .= "\t\t<meta property=\"" . $name . "\">" . $content . "</meta>\n";
         }
 
         foreach ($this->meta as $data) {
-            list($name, $content) = each($data);
+            // list($name, $content) = each($data);
+            foreach ($data as $name => $content) {
+                break;
+            }
             $metadata .= "\t\t<meta name=\"" . $name . "\" content=\"" . $content . "\" />\n";
         }