php解析mht文件转换成html的实例

php解析mht文件，使用编辑器打开可以看到base64编码所以，mht是可以转换成html的。

<?php

/**
 * 针对Mht格式的文件进行解析
* 使用例子:
* 
* function mhtmlParseBody($filename) {

	if (file_exists ( $filename )) {
 if (is_dir ( $filename )) return false;
 
 $filename = strtolower ( $filename );
 if (strpos ( $filename, '.mht', 1 ) == FALSE) return false;
 
 
 $o_mhtml = new mhtml ();
 $o_mhtml->set_file ( $filename );
 $o_mhtml->extract ();
 return $o_mhtml->get_part_to_file(0);

	}
	return null;
}

function mhtmlParseAll($filename) {

	if (file_exists ( $filename )) {
 if (is_dir ( $filename )) return false;

 $filename = strtolower ( $filename );
 if (strpos ( $filename, '.mht', 1 ) == FALSE) return false;
 

 $o_mhtml = new mhtml ();
 $o_mhtml->set_file ( $filename );
 $o_mhtml->extract ();
 return $o_mhtml->get_all_part_file();

	}
	return null;
}
*/

class mhtparse {

	var $file = '';
	var $boundary = '';
	var $filedata = '';
	var $countparts = 1;
	var $log = '';
	
	function extract() {
 $this->read_filedata ();
 $this->file_parts ();

 return 1;
	}
	
	function set_file($p) {
 $this->file = $p;
	}
	
	function get_log() {
 return $this->log;
	}
	
	function file_parts() {
 $lines = explode ( "\n", substr ( $this->filedata, 0, 8192 ) );
 foreach ( $lines as $line ) {
 $line = trim ( $line );
 if (strpos ( $line, '=' ) !== FALSE) {
 if (strpos ( $line, 'boundary', 0 ) !== FALSE) {
 $range = $this->getrange ( $line, '"', '"', 0 );
 $this->boundary = "--" . $range ['range'];
 $this->filedata = str_replace ( $line, '', $this->filedata );
 break;
 }
 }
 }
 if ($this->boundary != '') {
 $this->filedata = explode ( $this->boundary, $this->filedata );
 unset ( $this->filedata [0] );
 $this->filedata = array_values ( $this->filedata );
 $this->countparts = count ( $this->filedata );
 } else {
 $tmp = $this->filedata;
 $this->filedata = array (
 $tmp 
 );
 }
	}
	
	function get_all_part_file() {
 return $this->filedata;
	}
	
	function get_part_to_file($i) {
 $line_data_start = 0;
 $encoding = '';
 $part_lines = explode ( "\n", ltrim ( $this->filedata [$i] ) );
 foreach ( $part_lines as $line_id => $line ) {
 $line = trim ( $line );
 if ($line == '') {
 if (trim ( $part_lines [0] ) == '--')
 return 1;
 $line_data_start = $line_id;
 break;
 }
 if (strpos ( $line, ':' ) !== FALSE) {
 $pos = strpos ( $line, ':' );
 $k = strtolower ( trim ( substr ( $line, 0, $pos ) ) );
 $v = trim ( substr ( $line, $pos + 1, strlen ( $line ) ) );
 if ($k == 'content-transfer-encoding') {
 $encoding = $v;
 }
 if ($k == 'content-location') {
 $location = $v;
 }
 if ($k == 'content-type') {
 $contenttype = $v;
 }
 }
 }
 
 foreach ( $part_lines as $line_id => $line ) {
 if ($line_id <= $line_data_start)
 $part_lines [$line_id] = '';
 }
 
 $part_lines = implode ( '', $part_lines );
 if ($encoding == 'base64')
 $part_lines = base64_decode ( $part_lines );
 elseif ($encoding == 'quoted-printable')
 $part_lines = imap_qprint ( $part_lines );
 
 return $part_lines;
	}
	
	function read_filedata() {
 $handle = fopen ( $this->file, 'r' );
 $this->filedata = fread ( $handle, filesize ( $this->file ) );
 fclose ( $handle );
	}
	
	function getrange(&$subject, $Beginmark_str = '{', $Endmark_str = '}', $Start_pos = 0) {
 /*
 * $str="sssss { x { xx } {xx{xx } x} x} sssss"; $range=string::getRange($str,'{','}',0); echo $range['range']; //tulem: " x { xx } {xx{xx } x} x" echo $range['behin']; //tulem: 6 echo $range['end']; //tulem: 30 (' ') -- l5pumärgist järgnev out: array('range'=>$Range,'begin'=>$Begin_firstOccurence_pos,'end'=>$End_sequel_pos) | false v1.1 2004-2006,Uku-Kaarel J5esaar,ukjoesaar@hot.ee,http://www.hot.ee/ukjoesaar,+3725110693
 */
 if (empty ( $Beginmark_str ))
 $Beginmark_str = '{';
 $Beginmark_str_len = strlen ( $Beginmark_str );
 
 if (empty ( $Endmark_str ))
 $Endmark_str = '}';
 $Endmark_str_len = strlen ( $Endmark_str );
 
 /* $Start_pos_cache = 0; */
 do {
 /* !algus */
 if (! is_int ( $Begin_firstOccurence_pos ))
 $Start_pos_cache = $Start_pos;
 
 /* ?algus-test */
 $Start_pos_cache = @strpos ( $subject, $Beginmark_str, $Start_pos_cache );
 
 /* this is possible start for range */
 if (is_int ( $Start_pos_cache )) {
 /* skip */
 $Start_pos_cache = ($Start_pos_cache + $Beginmark_str_len);
 /* test possible range start pos */
 if (is_int ( $Begin_firstOccurence_pos )) {
 if ($Start_pos_cache < $range_end_pos)
 $rangeClean = 0;
 elseif ($Start_pos_cache > $range_end_pos)
 $rangeClean = 1;
 }
 /* here it is */
 if (! is_int ( $Begin_firstOccurence_pos ))
 $Begin_firstOccurence_pos = $Start_pos_cache;
 } /* VIGA NR 0 ALGUST EI OLE */
 
 if (! is_int ( $Start_pos_cache )) {
 /* !algus */
	/* VIGA NR 1 ALGUSMARKI EI LEITUD : VIIMANE VOIMALIK ALGUS */
	if (is_int ( $Begin_firstOccurence_pos ) and ($Start_pos_cache < $range_end_pos))
 $rangeClean = 1;
 else
 return false;
 }
 if (is_int ( $Begin_firstOccurence_pos ) and ($rangeClean != 1)) {
 if (! is_int ( $End_pos_cache ))
 $End_sequel_pos = $Begin_firstOccurence_pos;
 
 $End_pos_cache = strpos ( $subject, $Endmark_str, $End_sequel_pos );
 
 /* ok */
 if (is_int ( $End_pos_cache ) and ($rangeClean != 1)) {
 $range_current_lenght = ($End_pos_cache - $Begin_firstOccurence_pos);
 $End_sequel_pos = ($End_pos_cache + $Endmark_str_len);
 $range_end_pos = $End_pos_cache;
 }
 /* VIGA NR 2 LOPPU EI LEITUD */
 if (! is_int ( $End_pos_cache ))
 if ($End_pos_cache == false)
 return false;
 }
 } while ( $rangeClean < 1 );
 
 if (is_int ( $Begin_firstOccurence_pos ) and is_int ( $range_current_lenght ))
 $Range = substr ( $subject, $Begin_firstOccurence_pos, $range_current_lenght );
 else
 return false;
 
 return array (
 'range' => $Range,
 'begin' => $Begin_firstOccurence_pos,
 'end' => $End_sequel_pos 
 );
	} // end getrange()
} // class
?>

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