phpop3clean.getid3.lib.php

一个基于页面实现的pop客户端程序

<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <[e-mail]>               //
//  available at http://getid3.sourceforge.net                 //
//            or http://www.getid3.org                         //
/////////////////////////////////////////////////////////////////
//                                                             //
// getid3.lib.php - part of getID3()                           //
// See readme.txt for more details                             //
//                                                             //
/////////////////////////////////////////////////////////////////
// getid3_lib::GetURLImageSize( $urlpic ) determines the       //
// dimensions of local/remote URL pictures.                    //
// returns array with ($width, $height, $type)                 //
//                                                             //
// Thanks to: Oyvind Hallsteinsen aka Gosub / ELq -            //
// gosub豦lq*org  for the original size determining code       //
//                                                             //
// PHP Hack by Filipe Laborde-Basto Oct 21/2000                //
// FREELY DISTRIBUTABLE -- use at your sole discretion! :)     //
// Enjoy. (Not to be sold in commercial packages though,       //
// keep it free!) Feel free to contact me at fil豶ezox*com     //
// (http://www.rezox.com)                                      //
//                                                             //
// Modified by James Heinrich <getid3豼sers*sourceforge*net>   //
// June 1, 2001 - created GetDataImageSize($imgData) by        //
// seperating the fopen() stuff to GetURLImageSize($urlpic)    //
// which then calls GetDataImageSize($imgData). The idea being //
// you can call GetDataImageSize($imgData) with image data     //
// from a database etc.                                        //
//                                                            ///
/////////////////////////////////////////////////////////////////
// bundled as part of phPOP3clean - http://phpop3clean.sf.net  //
/////////////////////////////////////////////////////////////////


define('GETID3_GIF_SIG',     "\x47\x49\x46");  // 'GIF'
define('GETID3_PNG_SIG',     "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A");
define('GETID3_JPG_SIG',     "\xFF\xD8\xFF");
define('GETID3_JPG_SOS',     "\xDA"); // Start Of Scan - image data start
define('GETID3_JPG_SOF0',    "\xC0"); // Start Of Frame N
define('GETID3_JPG_SOF1',    "\xC1"); // N indicates which compression process
define('GETID3_JPG_SOF2',    "\xC2"); // Only SOF0-SOF2 are now in common use
define('GETID3_JPG_SOF3',    "\xC3");
// NB: codes C4 and CC are *not* SOF markers
define('GETID3_JPG_SOF5',    "\xC5");
define('GETID3_JPG_SOF6',    "\xC6");
define('GETID3_JPG_SOF7',    "\xC7");
define('GETID3_JPG_SOF9',    "\xC9");
define('GETID3_JPG_SOF10',   "\xCA");
define('GETID3_JPG_SOF11',   "\xCB");
// NB: codes C4 and CC are *not* SOF markers
define('GETID3_JPG_SOF13',   "\xCD");
define('GETID3_JPG_SOF14',   "\xCE");
define('GETID3_JPG_SOF15',   "\xCF");
define('GETID3_JPG_EOI',     "\xD9"); // End Of Image (end of datastream)



class getid3_lib
{

	function PrintHexBytes($string, $hex=true, $spaces=true, $htmlsafe=true) {
		$returnstring = '';
		for ($i = 0; $i < strlen($string); $i++) {
			if ($hex) {
				$returnstring .= str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT);
			} else {
				$returnstring .= ' '.(ereg("[\x20-\x7E]", $string{$i}) ? $string{$i} : '