解析php中的.doc文件

我使用html标签创建了。doc文件，它具有html表单元素，如文本框，复选框，单选按钮，下拉框和隐藏字段。当打开文档时，这些显示正常。

1. 当用php代码更新。doc文件时，我能够解析。doc文件。并且能够在保存到数据库时使用表单字段的数据。
2. 当在。doc文件中使用'另存为'选项时，新创建的doc文件正确显示html表单元素。但是无法解析"另存为"文件中的数据。

我想解析'另存为' doc文件也使用php。请帮助我如何解决这个问题?

这是我的doc文件解析代码:

function parseWord($userDoc) 
{
    $fileHandle = fopen($userDoc, "r");
    $line = @fread($fileHandle, filesize($userDoc));   
    $lines = explode(chr(0x0D),$line);
    $outtext = "";
    foreach($lines as $thisline)
      {
        $pos = strpos($thisline, chr(0x00));
        if (($pos !== FALSE)||(strlen($thisline)==0))
          {
          } else {
            $outtext .= $thisline." ";
          }
      }
      if(trim($outtext)==""){
         $outtext ="";
        //echo "<br> UTF ";
        $filename = $userDoc;
        if ( file_exists($filename) ) {
            $outtext ="";
          if ( ($fh = fopen($filename, 'r')) !== false ) {
            $headers = fread($fh, 0xA00);
            # 1 = (ord(n)*1) ; Document has from 0 to 255 characters
            $n1 = ( ord($headers[0x21C]) - 1 );
            # 1 = ((ord(n)-8)*256) ; Document has from 256 to 63743 characters
            $n2 = ( ( ord($headers[0x21D]) - 8 ) * 256 );
            # 1 = ((ord(n)*256)*256) ; Document has from 63744 to 16775423 characters
            $n3 = ( ( ord($headers[0x21E]) * 256 ) * 256 );
            # (((ord(n)*256)*256)*256) ; Document has from 16775424 to 4294965504 characters
            $n4 = ( ( ( ord($headers[0x21F]) * 256 ) * 256 ) * 256 );
            # Total length of text in the document
            $textLength = ($n1 + $n2 + $n3 + $n4);
            $extracted_plaintext = fread($fh, $textLength);
            # if you want the plain text with no formatting, do this
            //echo $extracted_plaintext;
            $outtext .= $extracted_plaintext;
            # if you want to see your paragraphs in a web page, do this
            //echo nl2br($extracted_plaintext);
          }
          fclose($fh);
        } 
     }
     $outtext = preg_replace("/[^a-zA-Z0-9's','.'-'n'r't@'/'_'(')]/","",$outtext);
     return $outtext;
} 
$userDoc = "cv.doc";
$text = parseWord($userDoc);
echo $text;