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。

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) {
		
		if (empty ( $Beginmark_str ))
			$Beginmark_str = '{';
		$Beginmark_str_len = strlen ( $Beginmark_str );
		
		if (empty ( $Endmark_str ))
			$Endmark_str = '}';
		$Endmark_str_len = strlen ( $Endmark_str );
		
		
		do {
			
			if (! is_int ( $Begin_firstOccurence_pos ))
				$Start_pos_cache = $Start_pos;
				
				
			$Start_pos_cache = @strpos ( $subject, $Beginmark_str, $Start_pos_cache );
			
			
			if (is_int ( $Start_pos_cache )) {
				
				$Start_pos_cache = ($Start_pos_cache + $Beginmark_str_len);
				
				if (is_int ( $Begin_firstOccurence_pos )) {
					if ($Start_pos_cache < $range_end_pos)
						$rangeClean = 0;
					elseif ($Start_pos_cache > $range_end_pos)
						$rangeClean = 1;
				}
				
				if (! is_int ( $Begin_firstOccurence_pos ))
					$Begin_firstOccurence_pos = $Start_pos_cache;
			} 
			
			if (! is_int ( $Start_pos_cache )) {
				
	
	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 );
				
				
				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;
				}
				
				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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