深圳市一览网络股份有限
公司
ShenZhen Elanw Network 

Co.,Ltd.

地址：南山科技园南区数字技术园
B2 栋 4A 
Add: Room A,4th Floor,Block 
B2,Digi-Tech Park ,

电话（Tel）:0755-86133725
传真（Fax）:0755-22632616
网址
（Web）:www.YL1001.com

　

        

/** 

        

* Public part of the class

        

* 

        

* @orgfile - Original file path

        

* @newfile - New filename with path

        

* @width   - Desired image width 

        

* @height  - Desired image height

        

*/

        

function

 resize(

$orgfile

,

$newfile

,

$width

,

$height

){

            

$this

->decode(

$orgfile

);

            

$this

->wr=

$width

/

$this

->originalwidth;

            

$this

->hr=

$height

/

$this

->originalheight;

            

$this

->resizeframes();

            

$this

->encode(

$newfile

,

$width

,

$height

);

            

$this

->clearframes();

        

}   

 

        

/** 

        

* GIF Decoder function.

        

* Parses the GIF animation into single frames.

        

*/

        

private

 

function

 decode(

$filename

){

            

$this

->decoding = true;            

            

$this

->clearvariables();

            

$this

->loadfile(

$filename

);

            

$this

->get_gif_header();

            

$this

->get_graphics_extension(0);

            

$this

->get_application_data();

            

$this

->get_application_data();

            

$this

->get_image_block(0);

            

$this

->get_graphics_extension(1);

            

$this

->get_comment_data();

            

$this

->get_application_data();

            

$this

->get_image_block(1);

            

while

(!

$this

->checkbyte(0x3b) && !

$this

->checkEOF()){

                

$this

->get_comment_data(1);

                

$this

->get_graphics_extension(2);

                

$this

->get_image_block(2);

            

}

            

$this

->writeframes(time());      

            

$this

->closefile();

            

$this

->decoding = false;

        

}