PHP read, parse eml files and generate Web page details

This article mainly introduces PHP read, parse eml files and generate Web page details, combined with examples of the PHP operation of the eml file reading, parsing, conversion and other related implementation skills and considerations, and with the demo source for the reader to download the reference, the need for friends can refer to the next

Specific as follows:

PHP reads the EML instance, this instance can parse the exported eml file into the body, and can save the attachment to the server. Not much to say the direct code.

<?php
// Author: richard e42083458@163.com
// gets parameters
error_reporting(E_ALL ^ (E_WARNING|E_NOTICE));
header("Content-type: text/html; charset=utf-8");
echo "<pre>";
define(EML_FILE_PATH,'./yjdata/');
//if ($filename =='') $filename = '21724696_niuyufu@qiaodazhao.com_ZC4422-r7GMz_R9QF3K6XUhmJOXd4c.eml';
//if ($filename =='') $filename = '21724696_niuyufu@qiaodazhao.com_ZC3218-dGquMgm7ytdF6HQgpSReC4c.eml';
//if ($filename =='') $filename = '163.eml';
//if ($filename =='') $filename = '166.eml';
//if ($filename =='') $filename ='nyf.eml';
//if ($filename =='') $filename ='email_header_icon.eml';
if ($filename =='') $filename = '20141230133705.eml';
$eml_file = EML_FILE_PATH.$filename;
if (!($content = fread(fopen(EML_FILE_PATH.$filename,'rb'), filesize(EML_FILE_PATH.$filename))))
  die('File not found ('.EML_FILE_PATH.$filename.')');
//title content
$pattern="/Subject: (.*?)\n/ims";
preg_match($pattern,$content,$subject_results);
$subject = getdecodevalue($subject_results[1]);
echo "Title:".$subject;
//From:
$pattern="/From: .*?<(.*?)>/ims";
preg_match($pattern,$content,$from_results);
$from = $from_results[1];
echo "\n\r";
echo "From:".$from;
//Recipient:
$pattern="/To:(.*?):/ims";
preg_match($pattern,$content,$to_results);
$pattern="/<(.*?)>/ims";
preg_match_all($pattern,$to_results[1],$to_results2);
if(count($to_results2[1])>0){
  $to = $to_results2[1];
}else{
  $pattern="/To:(.*?)\n/ims";
  preg_match($pattern,$content,$to_results);
  $to = $to_results[1];
}
echo "\n\r";
echo "Recipient:";
print_r($to);
echo "\n\r";
//Text content
$pattern = "/Content-Type: multipart\/alternative;.*?boundary=\"(.*?)\"/ims";
preg_match($pattern,$content,$results);
if($results[1]!=""){
  $seperator = "--".$results[1];
}else{
  die("boundary match failed");
}
$spcontent = explode($seperator, $content);
$items = array();
$keyid = 0;
$email_front_content_array = array();
foreach($spcontent as $spkey=>$item) {
  //Match header encoding and other information
  $pattern = "/Content-Type: ([^;]*?);.*?charset=(.*?)\nContent-Transfer-Encoding: (.*?)\n/ims";
  preg_match($pattern,$item,$item_results);
  if(count($item_results)==4){
    $Content_code = str_replace($item_results[0],"",$item);
    $item_results[4] = $Content_code;
    if(trim($item_results[3])=="base64"){
      $item_results[5] = base64_decode($item_results[4]);
    }
    if(trim($item_results[3])=="quoted-printable"){
      $item_results[5] = quoted_printable_decode($item_results[4]);
    }
    $item_results[5] = mb_convert_encoding($item_results[5],'UTF-8', trim($item_results[2]));
    //echo $item_results[5];exit;
    $email_front_content_array[] = $item_results;
  }
}
foreach ($email_front_content_array as $email_front_content_each_key=>$email_front_content_each_value){
  if($email_front_content_each_value[1]=='text/html'){
    $content_html = $email_front_content_each_value[5];
    break;
  }else{
    $content_html = $email_front_content_each_value[5];
  }
}
echo "Content:";
echo "\n\r";
echo $content_html;
echo "\n\r";
//Attachment content
$pattern = "/Content-Type: multipart\/mixed;.*?boundary=\"(.*?)\"/ims";
preg_match($pattern,$content,$results);
if($results[1]!=""){
  $seperator = "--".$results[1];
  $spcontent = explode($seperator, $content);
  $items = array();
  $keyid = 0;
  $email_attachment_content_array = array();
  foreach($spcontent as $spkey=>$item) {
    //Match header encoding and other information
    $pattern = "/Content-Type: ([^;]*?);.*?name=(.*?)\nContent-Transfer-Encoding: (.*?)\nContent-Disposition: attachment;.*? filename=(.*?)\n/ims";
    preg_match($pattern,$item,$item_results);
    //print_r($item_results);
    if(count($item_results)==5){
      $Content_code = str_replace($item_results[0],"",$item);
      $item_results[5] = trim($Content_code);
      if(trim($item_results[3])=="base64"){
        $item_results[6] = base64_decode($item_results[5]);
      }
      if(trim($item_results[3])=="quoted-printable"){
        $item_results[6] = quoted_printable_decode($item_results[5]);
      }
      $item_results[7] = str_replace("\"","",getdecodevalue($item_results[2]));
      $item_results[8] = str_replace("\"","",getdecodevalue($item_results[4]));
      //Save the attachment content to the server?
      //When the file name meets the specification: when there is a suffix
      if(strrpos($item_results[8],'.')!==false){
        $ext = substr($item_results[8], strrpos($item_results[8],'.') + 1);
        //$filename = "./yjdata/attachment/".date("YmdHis").mt_rand(10000,99999).".".trim($ext);
        $attachment_filename = "./yjdata/attachment/".trim(str_replace("\"","",getbase64code($item_results[4]))).".".trim($ext);
        mkdirs(dirname($attachment_filename));
        $fp = fopen($attachment_filename, "w+");
        if (flock($fp, LOCK_EX)) {// Perform exclusive lock
          fwrite($fp, $item_results[6]);
          flock($fp, LOCK_UN); // release the lock
        } else {
          //echo "Couldn't lock the file !";
        }
        fclose($fp);
        $item_results[9] = $attachment_filename;
        $email_attachment_content_array[] = $item_results;
      }
    }
  }
  //print_r($email_attachment_content_array);
}
if(count($email_attachment_content_array)>0){
  echo "Attachment:";
  echo "\n\r";
  //Accessory read
  foreach($email_attachment_content_array as $email_attachment_content_each_key=>$email_attachment_content_each_value){
    unset($email_attachment_content_each_value[5]);
    unset($email_attachment_content_each_value[6]);
    print_r($email_attachment_content_each_value[8]);
    print_r($email_attachment_content_each_value[9]);
  }
}
function getbase64code($content){
  $pattern="/=\?GB2312\?B\?(.*?)\?=|=\?GBK\?B\?(.*?)\?=|=\?UTF-8\?B \?(.*?)\?=/ims";
  preg_match($pattern,$content,$subject_results);
  if($subject_results[1]!=""){
    $subject = $subject_results[1];
    $charset = "GB2312";
  }
  elseif($subject_results[2]!=""){
    $subject = $subject_results[2];
    $charset = "GBK";
  }
  elseif($subject_results[3]!=""){
    $subject = $subject_results[3];
    $charset = "UTF-8";
  }else{
    $subject = $content;
    $charset = "";
  }
  return $subject;
}
function getdecodevalue($content){
  $pattern="/=\?GB2312\?B\?(.*?)\?=|=\?GBK\?B\?(.*?)\?=|=\?UTF-8\?B \?(.*?)\?=/ims";
  preg_match($pattern,$content,$subject_results);
  if($subject_results[1]!=""){
    $subject = base64_decode($subject_results[1]);
    $charset = "GB2312";
  }
  elseif($subject_results[2]!=""){
    $subject = base64_decode($subject_results[2]);
    $charset = "GBK";
  }
  elseif($subject_results[3]!=""){
    $subject = base64_decode($subject_results[3]);
    $charset = "UTF-8";
  }else{
    $subject = $content;
    $charset = "";
  }
  if($charset!=""){
    $subject = mb_convert_encoding($subject,'UTF-8', $charset);
  }
  return $subject;
}
function mkdirs($dir)
{
  if(!is_dir($dir))
  {
    if(!mkdirs(dirname($dir))){
      return false;
    }
    if(!mkdir($dir,0777)){
      return false;
    }
  }
  chmod($dir, 777); //Give directory operation permissions
  return true;
}
?>

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