如果利用php来判断就简单了,原理很简单:
识别是否是动画,要检查文件中是否包含chr(0×21).chr(0xff).chr(0x0b).’NETSCAPE2.0‘chr(0×21).chr(0xff)
是gif图片中扩展功能段的标头‘NETSCAPE2.0‘是扩展功能执行的程序名
代码如下。
代码如下 | 复制代码 |
function IsAnimatedGif($filename) |

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