Read .eml file using php - php

Question

I have the php script as shown below. I want to ask that using this script how can i read normal .eml file as we read in gmail or yahoo? how can i get attachments from it ?
<?php
/**
*
* This code has been written by Alexis Ulrich (http://alx2002.free.fr)
* This code is in the public domain.
*
*/
define(EML_FILE_PATH,'');
define(PICTURE_DIRECTORY_PATH,'img/');
// gets parameters
$images = substr($_GET['images'],0,5);
$filename = substr($_GET['filename'],0,50);
if ($filename == '') $filename = 'toto.eml';
$eml_file = EML_FILE_PATH.$filename;
// opens file
if (!($content = fread(fopen(EML_FILE_PATH.$filename, 'r'), filesize(EML_FILE_PATH.$filename))))
die('File not found ('.EML_FILE_PATH.$filename.')');
// two kinds of separators
if (strpos($content,'------_') !== false) $separator = '------_';
else $separator = '------=_';
$aContent = explode($separator,$content);
$aImages = array();
foreach($aContent as $thisContent) {
if (strpos($thisContent,'Content-Type: text/html') !== false) {
// email HTML body
$thisContent = substr($thisContent,strpos($thisContent,'<!DOCTYPE'));
$thisHTMLContent = quoted_printable_decode($thisContent);
//echo "<hr>$thisHTMLContent<hr>\n\n";
}
if (strpos($thisContent,'Content-Type: image/gif;') !== false) {
// base64 gif picture
$begin = strpos($thisContent,'Content-ID: <') + 13;
$long = strpos(substr($thisContent,strpos($thisContent,'Content-ID: <') + 13),'>');
$img_id = substr($thisContent,$begin,$long);
$img_name = substr($thisContent,strpos($thisContent,'name="')+6,strpos($thisContent,'.gif"')-strpos($thisContent,'name="')-6);
if (strpos($thisContent,'Content-Location: ') !== false) {
$img_location = substr($thisContent,strpos($thisContent,'Content-Location: ')+18);
$img_location = substr($img_location,0,strpos($img_location,'.gif'));
$searched = 'Content-Location: ' . $img_location . '.gif';
$img_base64 = substr($thisContent,strpos($thisContent,$searched)+strlen($searched));
}
else {
$img_location = $img_name;
$searched = 'Content-ID: <' . $img_id . '>';
$Content_ID_pos = strpos($thisContent,'Content-ID: <');
$end_content = substr($thisContent,$Content_ID_pos);
$end_Content_ID_pos = strpos($end_content,'>');
$img_base64 = substr($end_content,$end_Content_ID_pos + 1);
}
$aThisImage = array('id'=>$img_id, 'name'=>$img_name, 'location'=>$img_location, 'type'=>'gif', 'base64'=>$img_base64);
//print_r($aThisImage);
$aImages[] = $aThisImage;
}
if (strpos($thisContent,'Content-Type: image/jpeg;') !== false) {
// base64 jpg picture
$begin = strpos($thisContent,'Content-ID: <') + 13;
$long = strpos(substr($thisContent,strpos($thisContent,'Content-ID: <') + 13),'>');
$img_id = substr($thisContent,$begin,$long);
$img_name = substr($thisContent,strpos($thisContent,'name="')+6,strpos($thisContent,'.jpg"')-strpos($thisContent,'name="')-6);
if (strpos($thisContent,'Content-Location: ') !== false) {
$img_location = substr($thisContent,strpos($thisContent,'Content-Location: ')+18);
$img_location = substr($img_location,0,strpos($img_location,'.jpg'));
$searched = 'Content-Location: ' . $img_location . '.jpg';
$img_base64 = substr($thisContent,strpos($thisContent,$searched)+strlen($searched));
}
else {
$img_location = $img_name;
$searched = 'Content-ID: <' . $img_id . '>';
$Content_ID_pos = strpos($thisContent,'Content-ID: <');
$end_content = substr($thisContent,$Content_ID_pos);
$end_Content_ID_pos = strpos($end_content,'>');
$img_base64 = substr($end_content,$end_Content_ID_pos + 1);
}
$aThisImage = array('id'=>$img_id, 'name'=>$img_name, 'location'=>$img_location, 'type'=>'jpg', 'base64'=>$img_base64);
$aImages[] = $aThisImage;
}
}
//print_r($aImages);
foreach($aImages as $image) {
if ($images == 'filed') {
// image file creation
if (!file_exists(PICTURE_DIRECTORY_PATH."$image[location].$image[type]")) {
if (!$handle = fopen (PICTURE_DIRECTORY_PATH."$image[location].$image[type]", "wb"))
die("Cannot open file (".PICTURE_DIRECTORY_PATH."$image[location].$image[type])");
if (!fwrite($handle, base64_decode($image[base64])))
die("Cannot write into file (".PICTURE_DIRECTORY_PATH."$image[location].$image[type])");
fclose($handle);
}
$thisHTMLContent = str_replace('cid:'.$image['id'],PICTURE_DIRECTORY_PATH."$image[location].$image[type]",$thisHTMLContent);
}
else {
// images to be created on the fly
$imageLocation = urlencode($image[location]);
$file = urlencode($eml_file);
$thisHTMLContent = str_replace('cid:'.$image['id'],"viewImage.php?imageLocation=$imageLocation&file=$file",$thisHTMLContent);
}
$thisHTMLContent = preg_replace("/<IMG HEIGHT=(\d*)/i","<img ",$thisHTMLContent);
// no base href referring to local file
$thisHTMLContent = preg_replace("/href=\"file(.*)\"/i","",$thisHTMLContent);
}
echo $thisHTMLContent;
?>
Thanks in advance and would hope to receive reply soon.