<?php // +---------------------------------------------------------------------- // | ThinkPHP [ WE CAN DO IT JUST THINK IT ] // +---------------------------------------------------------------------- // | Copyright (c) 2006-2015 http://thinkphp.cn All rights reserved. // +---------------------------------------------------------------------- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) // +---------------------------------------------------------------------- // | Author: yunwuxin <448901948@qq.com> // +---------------------------------------------------------------------- namespace think\image\gif; class Gif { /** * GIF帧列表 * * @var array */ private $frames = []; /** * 每帧等待时间列表 * * @var array */ private $delays = []; /** * 构造方法,用于解码GIF图片 * * @param string $src GIF图片数据 * @param string $mod 图片数据类型 * @throws \Exception */ public function __construct($src = null, $mod = 'url') { if (!is_null($src)) { if ('url' == $mod && is_file($src)) { $src = file_get_contents($src); } /* 解码GIF图片 */ try { $de = new Decoder($src); $this->frames = $de->getFrames(); $this->delays = $de->getDelays(); } catch (\Exception $e) { throw new \Exception("解码GIF图片出错"); } } } /** * 设置或获取当前帧的数据 * * @param string $stream 二进制数据流 * @return mixed 获取到的数据 */ public function image($stream = null) { if (is_null($stream)) { $current = current($this->frames); return false === $current ? reset($this->frames) : $current; } $this->frames[key($this->frames)] = $stream; } /** * 将当前帧移动到下一帧 * * @return string 当前帧数据 */ public function nextImage() { return next($this->frames); } /** * 编码并保存当前GIF图片 * * @param string $pathname 图片名称 */ public function save($pathname) { $gif = new Encoder($this->frames, $this->delays, 0, 2, 0, 0, 0, 'bin'); file_put_contents($pathname, $gif->getAnimation()); } }