$resizeimage = new resizeimage("./shawn.jpg", "200", "100", "0","../pic/shawnsun.jpg");
//實例化下面的類,就能生成縮略圖
//其中,源文件和縮略圖地址可以相同,200,100分別代表寬和高，第四個參數(shù)為可選 0不截圖，1為截圖

class resizeimage{
?
??? //圖片類型
??? public $type;
??? //實際寬度
??? public $width;
??? //實際高度
??? public $height;
??? //改變后的寬度
??? public $resize_width;
??? //改變后的高度
??? public $resize_height;
??? //是否裁圖
??? public $cut;
??? //源圖象
??? public $srcimg;
??? //目標(biāo)圖象地址
??? public $dstimg;
??? //臨時創(chuàng)建的圖象
??? public $im;
????
??? function resizeimage($img, $wid, $hei,$c,$dstpath){
????
????????? $this--->srcimg = $img;
????????? $this->resize_width = $wid;
????????? $this->resize_height = $hei;
????????? $this->cut = $c;
????
????????? //圖片的類型
????????? $this->type = strtolower(substr(strrchr($this->srcimg,"."),1));
????????? //初始化圖象
????????? $this->initi_img();
????????? //目標(biāo)圖象地址
????????? $this->dst_img($dstpath);
????????? //W & H
????????? $this->width? = imagesx($this->im);
????????? $this->height = imagesy($this->im);
????????? //生成圖象
????????? $this->newimg();
????????? ImageDestroy ($this->im);
???? }
????
??? function newimg(){
????
??????? //改變后的圖象的比例
??????? $resize_ratio = ($this->resize_width)/($this->resize_height);
??????? //實際圖象的比例
??????? $ratio = ($this->width)/($this->height);
????????
??????? if(($this->cut)=="1")
??????? //裁圖
??????? {
??????????? if($ratio>=$resize_ratio)
??????????? //高度優(yōu)先
??????????? {
??????????????? $newimg = imagecreatetruecolor($this->resize_width,$this->resize_height);
??????????????? imagecopyresampled($newimg, $this->im, 0, 0, 0, 0, $this->resize_width,
?????????????????????????????????? $this->resize_height, (($this->height)*$resize_ratio),
?????????????????????????????????? $this->height
??????????????? );
??????????????? ImageJpeg ($newimg,$this->dstimg);
??????????? }
??????????? if($ratio ??????????? //寬度優(yōu)先
??????????? {
??????????????? $newimg = imagecreatetruecolor($this->resize_width,$this->resize_height);
??????????????? imagecopyresampled($newimg, $this->im, 0, 0, 0, 0, $this->resize_width,
?????????????????????????????????? $this->resize_height, $this->width,
?????????????????????????????????? (($this->width)/$resize_ratio)
??????????????? );
??????????????? ImageJpeg ($newimg,$this->dstimg);
??????????? }
????????????? }
??????? else
??????? //不裁圖
??????? {
??????????? if($ratio>=$resize_ratio)
??????????? {
??????????????? $newimg = imagecreatetruecolor($this->resize_width,
?????????????????????????????????????????????? ($this->resize_width)/$ratio
??????????????? );
??????????????? imagecopyresampled($newimg, $this->im, 0, 0, 0, 0, $this->resize_width,
?????????????????????????????????? ($this->resize_width)/$ratio, $this->width,
?????????????????????????????????? $this->height
??????????????? );
??????????????? ImageJpeg ($newimg,$this->dstimg);
??????????? }
??????????? if($ratio ??????????? {
??????????????? $newimg = imagecreatetruecolor(($this->resize_height)*$ratio,
??????????????????????????????????????????????? $this->resize_height
??????????????? );
??????????????? imagecopyresampled($newimg, $this->im, 0, 0, 0, 0,
?????????????????????????????????? ($this->resize_height)*$ratio,
?????????????????????????????????? $this->resize_height, $this->width,
?????????????????????????????????? $this->height
??????????????? );
??????????????? ImageJpeg ($newimg,$this->dstimg);
??????????? }
??????? }
?? }
????
??? //初始化圖象
??? function initi_img(){
?
??????? if($this->type=="jpg")
??????? {
??????????? $this->im = imagecreatefromjpeg($this->srcimg);
??????? }
??????? if($this->type=="gif")
??????? {
??????????? $this->im = imagecreatefromgif($this->srcimg);
??????? }
??????? if($this->type=="png")
??????? {
??????????? $this->im = imagecreatefrompng($this->srcimg);
??????? }
??? }
??? //圖象目標(biāo)地址
??? function dst_img($dstpath){
????
??????? $full_length? = strlen($this->srcimg);
??????? $type_length? = strlen($this->type);
??????? $name_length? = $full_length-$type_length;
?
??????? $name = substr($this->srcimg,0,$name_length-1);
??????? $this->dstimg = $dstpath;
?
??????? //echo $this->dstimg;
??? }
}
?
?>

thumbs('shawn.jpg','shawnsun.jpg',100,100);
//參數(shù)屬性類似于方法一

?
function thumbs($FileName,$SaveTo,$SetW,$SetH){
??? $IMGInfo= getimagesize($FileName);
??? if(!$IMGInfo) return false;
????????
??? if($IMGInfo['mime']== "image/pjpeg" || $IMGInfo['mime']=="image/jpeg"){
??????? $ThisPhoto= imagecreatefromjpeg($FileName);
??? }elseif($IMGInfo['mime']== "image/x-png" || $IMGInfo['mime']== "image/png"){
??????? $ThisPhoto= imagecreatefrompng($FileName);??
??? }elseif($IMGInfo['mime']== "image/gif"){
??????? $ThisPhoto=imagecreatefromgif($FileName);
??? }
????
??? $width=$IMGInfo[0];
??? $height=$IMGInfo[1];??
??? $scalc = max($width/$SetW,$height/$SetH);
??? $nw = intval($width/$scalc);
??? $nh = intval($height/$scalc);
??? echo "縮略大?。簑$nw,h$nh
";
????
??? if($SetW-$nw == 1){$nw = $SetW;}
??? if($SetH-$nh == 1){$nh = $SetH;}
??? echo "+修正1像素： w$nw,h$nh
";
????
??? //補(bǔ)寬
??? if($SetW-$nw > 0){
??????? $nh = $nh +(($nh/$nw) * ($SetW-$nw));
??????? echo "*需補(bǔ)寬".($SetW-$nw).",陪補(bǔ)高".(($nh/$nw) * ($SetW-$nw))."?
";?
??????? $nw = $SetW;
??? }
??? //補(bǔ)高
??? if($SetH-$nh > 0){
??????? $nw = $nw + (($nw/$nh) * ($SetH-$nh));
??????? echo "*需補(bǔ)高".($SetH-$nh).",陪補(bǔ)寬". (($nw/$nh) * ($SetH-$nh)) ."
";
??????? $nh = $SetH;
??? }
??? $nw = intval($nw);
??? $nh = intval($nh);
??? echo "+修正大?。簑$nw,h$nh
";
????
??? $px = ($SetW - $nw)/2;
??? $py = ($SetH - $nh)/2;
??? echo "窗口大?。簑$SetW,h$SetH
";
??? echo "+偏移修正：x$px,y$py
";
????
??? $NewPhoto=imagecreatetruecolor($SetW,$SetH);
??? imagecopyresized($NewPhoto,$ThisPhoto,$px,$py,0,0,$nw,$nh,$width,$height);
??? ImageJpeg ($NewPhoto,$SaveTo);
??? return true;
}
????
?>