<?php require_once("../../config/class.GD.Zoom.php"); $file=New MakeMiniature(); $file->setParam("../../".$tmp_pic,"../../".$tmp_zoom_pic); $file->createNewImg($file->im,320,320,false); ?> class.GD.Zoom.php<?php class MakeMiniature{ public $srcFile; public $dstFile; public $fileType; public $im; public $imgType = array("jpg","gif","png","bmp");
public function findType($fileName){ if($type=strrchr($fileName,".")){ $type=substr($type,1); if(!strstr($type,".")){ $var=$type; }else{ echo "file type error!"; } }else{ echo "file type error!"; } for($i=0;$i<=count($this->imgType);$i++){ if(Strcmp($this->imgType[$i],$var)==0){ $this->fileType=$var; return true; }else{ return false; } } }
function loadImg($fileType){ $type=$this->isNull($fileType); switch($type){ case "jpg": $im=ImageCreateFromjpeg($this->srcFile); break; case "gif": $im=ImageCreateFromGIF($this->srcFile); break; case "png": $im=imagecreatefrompng($this->srcFile); break; case "bmp": $im=imagecreatefromwbmp($this->srcFile); break; default: $im=0; echo "not you input file type!"; break; } $this->im=$im; return $im; }
function isNull($var){ if(!isset($var)||empty($var)){ echo "var is Null！"; exit(0); } return $var; }
function setParam($srcFile,$dstFile){ $this->srcFile=$this->isNull($srcFile); $this->dstFile=$this->isNull($dstFile);
if(!$this->findType($srcFile)){ echo "file type error!"; }
/*---------------------------------------
* Code Sundj.
* --------------------------------------
* $image = new image();
* $image->init('./image.jpg');
* $image->cut('./1.jpg', 120, 120, 1);
* $image->cut('./2.jpg', 120, 120, 2);
* $image->cut('./3.jpg', 120, 120, 3);
* $image->cut('./4.jpg', 120, 120, 4);
* dimensions
----------------------------------------*/
class image
{
private $import;
private $export;
private $create;
private $quality = 100;
private $ext;
private $image;
private $image_info = array();
private $thumb;
private $thumb_info = array();
private $ratio = array();
private $e = array();
public function init($source)
{
if(!function_exists('gd_info'))
{
define('GD2ERROR', true);
$this->e[] = 'GD lib error';
return false;
}
$info = getimagesize($source);
$this->image_info['x'] = 0;
$this->image_info['y'] = 0;
$this->image_info['w'] = $info[0];
$this->image_info['h'] = $info[1]; switch($info[2]) //info[2] MIME code
{
case IMAGETYPE_JPEG:
$this->import = 'imagecreatefromjpeg';
$this->export = 'imagejpeg';
$this->quality = 100;
$this->ext = '.jpg';
break;
case IMAGETYPE_GIF:
$this->import = 'imagecreatefromgif';
$this->export = 'imagegif';
$this->quality = 100;
$this->ext = '.gif';
break;
case IMAGETYPE_PNG:
$this->import = 'imagecreatefrompng';
$this->export = 'imagepng';
$this->quality = 9;
$this->ext = '.png';
break;
default:
$this->e[] = 'Image mime unaccept';
return false;
}
$this->create = function_exists('imagecreatetruecolor') ? 'imagecreatetruecolor' : 'imagecreate'; $import = $this->import;
$this->image = $import($source);
}
public function cut($new, $w = 16, $h = 16, $mode = 1)
{
$this->ratio['thumb'] = $w / $h;
$this->ratio['image'] = $this->image_info['w'] / $this->image_info['h'];
$this->ratio['width'] = $w / $this->image_info['w'];
$this->ratio['height'] = $h / $this->image_info['h'];
$export = $this->export;
switch($mode)
{
case 2:
$this->transform_2($w, $h);
break;
case 3:
$this->transform_3($w, $h);
break;
case 4:
$this->transform_4($w, $h);
break;
default:
$this->transform_1($w, $h);
break;
} imagefill($this->thumb, 0, 0, imagecolorallocate($this->thumb, 255, 255, 255));
imagecopyresized($this->thumb, $this->image, $this->thumb_info['x'], $this->thumb_info['y'], $this->image_info['x'], $this->image_info['y'], $this->thumb_info['w'], $this->thumb_info['h'], $this->image_info['w'], $this->image_info['h']);
$export($this->thumb, $new, $this->quality);
}
private function transform_1($w, $h)
{
if($this->ratio['width'] > 1 && $this->ratio['height'] > 1)
{
$this->thumb_info['w'] = $this->image_info['w'];
$this->thumb_info['h'] = $this->image_info['h'];
}
elseif($this->ratio['width'] > 1 && $this->ratio['height'] <= 1)
{
$this->thumb_info['w'] = $this->image_info['w'];
$this->thumb_info['h'] = $this->image_info['h'];
}
elseif($this->ratio['width'] <= 1 && $this->ratio['height'] > 1)
{
$this->thumb_info['w'] = $this->image_info['w'];
$this->thumb_info['h'] = $this->image_info['h'];
}
elseif($this->ratio['width'] <= 1 && $this->ratio['height'] <= 1)
{
if($this->ratio['image'] > 1)
{
$this->thumb_info['w'] = $h * $this->ratio['image'];
$this->thumb_info['h'] = $h;
}
else
{
$this->thumb_info['w'] = $w;
$this->thumb_info['h'] = $w / $this->ratio['image'];
}
}
else
{
//
}
$this->thumb_info['x'] = ($w - $this->thumb_info['w']) / 2;
$this->thumb_info['y'] = ($h - $this->thumb_info['h']) / 2;
$this->image_info['x'] = 0;
$this->image_info['y'] = 0;
$create = $this->create;
$this->thumb = $create($w, $h);
}
private function transform_2($w, $h)
{
if($w > $this->image_info['w'] && $h > $this->image_info['h'])
{
$w = $this->image_info['w'];
$h = $this->image_info['h'];
}
elseif($w <= $this->image_info['w'] && $h <= $this->image_info['h'])
{
if($this->ratio['width'] <= $this->ratio['height'])
{
$w = $this->image_info['w'] * $this->ratio['width'];
$h = $this->image_info['h'] * $this->ratio['width'];
}
else
{
$w = $this->image_info['w'] * $this->ratio['height'];
$h = $this->image_info['h'] * $this->ratio['height'];
}
}
elseif($w <= $this->image_info['w'] && $h > $this->image_info['h'])
{
$w = $this->image_info['w'] * $this->ratio['width'];
$h = $this->image_info['h'] * $this->ratio['width'];
}
elseif($w > $this->image_info['w'] && $h <= $this->image_info['h'])
{
$w = $this->image_info['w'] * $this->ratio['height'];
$h = $this->image_info['h'] * $this->ratio['height'];
}
else
{
//
}
$this->thumb_info['w'] = $w;
$this->thumb_info['h'] = $h;
$this->thumb_info['x'] = 0;
$this->thumb_info['y'] = 0;
$this->image_info['x'] = 0;
$this->image_info['y'] = 0;
$create = $this->create;
$this->thumb = $create($w, $h);
}
private function transform_3($w, $h)
{
if($this->ratio['width'] > 1 && $this->ratio['height'] > 1)
{
$this->thumb_info['w'] = $this->image_info['w'];
$this->thumb_info['h'] = $this->image_info['h'];
}
elseif($this->ratio['width'] > 1 && $this->ratio['height'] <= 1)
{
$this->thumb_info['w'] = $h * $this->ratio['image'];
$this->thumb_info['h'] = $h;
}
elseif($this->ratio['width'] <= 1 && $this->ratio['height'] > 1)
{
$this->thumb_info['w'] = $w;
$this->thumb_info['h'] = $w / $this->ratio['image'];
}
elseif($this->ratio['width'] <= 1 && $this->ratio['height'] <= 1)
{
if($this->ratio['thumb'] > $this->ratio['image'])
{
$this->thumb_info['w'] = $h * $this->ratio['image'];
$this->thumb_info['h'] = $h;
}
else
{
$this->thumb_info['w'] = $w;
$this->thumb_info['h'] = $w / $this->ratio['image'];
}
}
else
{
//
}
$this->thumb_info['x'] = ($w - $this->thumb_info['w']) / 2;
$this->thumb_info['y'] = ($h - $this->thumb_info['h']) / 2;
$this->image_info['x'] = 0;
$this->image_info['y'] = 0; $create = $this->create;
$this->thumb = $create($w, $h);
}
private function transform_4($w, $h)
{
$this->thumb_info['w'] = $w;
$this->thumb_info['h'] = $h;
if($this->ratio['image'] > $this->ratio['thumb'])
{
$this->image_info['x'] = ($this->image_info['w'] - $this->image_info['h'] * $this->ratio['thumb']) / 2;
$this->image_info['y'] = 0;
$this->image_info['w'] = $this->image_info['h'] * $this->ratio['thumb'];
}
else
{
$this->image_info['x'] = 0;
$this->image_info['y'] = ($this->image_info['h'] - $this->image_info['w'] / $this->ratio['thumb']) / 2;
$this->image_info['h'] = $this->image_info['w'] / $this->ratio['thumb'];
}
$this->thumb_info['x'] = 0;
$this->thumb_info['y'] = 0;
$create = $this->create;
$this->thumb = $create($w, $h);
}
}
?>
$image->cut($thumb, $w, $h, $mode);
/*
$source_img = "../base_img/index.jpg";
$target_dir='../base_img/';
$new_width=500;
$new_height=500;
$if_cut=0;
$target_name='HanroadClass';
$img=new HanroadClass;
$img->HrResize($source_img,$target_dir,$target_name,$new_width,$new_height,$if_cut);
*/
class HanroadClass
{
/**//**********************
利用PHP的GD库生成缩略图。
支持图片格式：jpg,gif,png
$source_img: 源图象完整路径
$target_dir: 目标图象目录
$target_name: 目标图象名称
$new_width: 目标图象宽
$new_height: 目标图象高
$if_cut: 是否裁图
1(裁图): 裁图则按设置的大小生成目标图象
0(不裁): 不裁则按比例生成目标图象
**********************/
function HrResize($source_img,$target_dir,$target_name,$new_width,$new_height,$if_cut) {
//图片类型
$img_type = strtolower(substr(strrchr($source_img,"."),1));
//图象的完整目标路径
$tar_url = $target_dir."/".$target_name.".".$img_type;
//初始化图象
if($img_type=="jpg")$temp_img = imagecreatefromjpeg($source_img);
if($img_type=="gif")$temp_img = imagecreatefromgif($source_img);
if($img_type=="png")$temp_img = imagecreatefrompng($source_img);
//原始图象的宽和高
$old_width = imagesx($temp_img);
$old_height = imagesy($temp_img);
//改变前后的图象的比例
$new_ratio = $new_width/$new_height;
$old_ratio = $old_width/$old_height;
//生成新图象的参数
//情况一：裁图 则按设置的大小生成目标图象
if($if_cut=="1"){
$new_width = $new_width;
$new_height = $new_height;
//高度优先
if($old_ratio>=$new_ratio){
$old_width = $old_height*$new_ratio;
$old_height = $old_height;
}else{//宽度优先
$old_width = $old_width;
$old_height = $old_width/$new_ratio;
}
}else{//情况二：不裁图 则按比例生成目标图象
$old_width = $old_width;
$old_height = $old_height;
//高度优先
if($old_ratio>=$new_ratio) {
$new_width = $new_width;
$new_height = $new_width/$old_ratio;
}else{//宽度优先
$new_width = $new_height*$old_ratio;
$new_height = $new_height;
}
}
//生成新图片
$new_img = imagecreatetruecolor($new_width,$new_height);
if($img_type=="gif"){
imagealphablending($new_img, false);
imagesavealpha($new_img, true);
}
if($img_type=="png"){
imagesavealpha($temp_img,true);
imagealphablending($new_img,false);
imagesavealpha($new_img,true);
}
imagecopyresampled($new_img,$temp_img,0,0,0,0,$new_width,$new_height,$old_width,$old_height);
if($img_type=="jpg")imagejpeg($new_img,$tar_url);
if($img_type=="gif"){
$bgcolor=imagecolorallocate($new_img,0,0,0);
$bgcolor=imagecolortransparent($new_img,$bgcolor);
$bgcolor=imagecolorallocatealpha($new_img, 0, 0, 0,127);
imagefill($new_img, 0, 0, $bgcolor);
imagegif($new_img,$tar_url);
}
if($img_type=="png")imagepng($new_img,$tar_url);
imagedestroy($source_img);
imagedestroy($new_img);
}
}
<?php
require_once("../../config/class.GD.Zoom.php");
$file=New MakeMiniature();
$file->setParam("../../".$tmp_pic,"../../".$tmp_zoom_pic);
$file->createNewImg($file->im,320,320,false);
?> class.GD.Zoom.php<?php
class MakeMiniature{
public $srcFile;
public $dstFile;
public $fileType;
public $im;
public $imgType = array("jpg","gif","png","bmp");
public function findType($fileName){
if($type=strrchr($fileName,".")){
$type=substr($type,1);
if(!strstr($type,".")){
$var=$type;
}else{
echo "file type error!";
}
}else{
echo "file type error!";
} for($i=0;$i<=count($this->imgType);$i++){
if(Strcmp($this->imgType[$i],$var)==0){
$this->fileType=$var;
return true;
}else{
return false;
}
}
}
function loadImg($fileType){
$type=$this->isNull($fileType);
switch($type){
case "jpg":
$im=ImageCreateFromjpeg($this->srcFile);
break;
case "gif":
$im=ImageCreateFromGIF($this->srcFile);
break;
case "png":
$im=imagecreatefrompng($this->srcFile);
break;
case "bmp":
$im=imagecreatefromwbmp($this->srcFile);
break;
default:
$im=0;
echo "not you input file type!";
break;
}
$this->im=$im;
return $im;
}
function isNull($var){
if(!isset($var)||empty($var)){
echo "var is Null！";
exit(0);
}
return $var;
}
function setParam($srcFile,$dstFile){
$this->srcFile=$this->isNull($srcFile);
$this->dstFile=$this->isNull($dstFile);
if(!$this->findType($srcFile)){
echo "file type error!";
}
if(!$this->loadImg($this->fileType)){
echo "open ".$this->srcFile."error!";
}
}
function getImgWidth($im){
$im=$this->isNull($im);
$width=imagesx($im);
return $width;
}
function getImgHeight($im){
$im=$this->isNull($im);
$height=imagesy($im);
return $height;
}
function createImg($im,$scale,$page){
$im=$this->isNull($im);
$scale=$this->isNull($scale);
$srcW=$this->getImgWidth($im);
$srcH=$this->getImgHeight($im);
$detW=round($srcW*$scale/100);
$detH=round($srcH*$scale/100);
$om=imagecreatetruecolor($detW,$detH);
//ImageCopyResized($om,$im,0,0,0,0,$detW,$detH,$srcW,$srcH);
imagecopyresampled($om,$im,0,0,0,0,$detW,$detH,$srcW,$srcH);
$this->showImg($om,$this->fileType,$page);
}
function createNewImg($im,$width,$height,$page){
$im=$this->isNull($im);
$srcW=$this->getImgWidth($im);
$srcH=$this->getImgHeight($im);
$detW=$this->isNull($width);
$detH=$this->isNull($height);
$om=imagecreatetruecolor($detW,$detH);
//ImageCopyResized($om,$im,0,0,0,0,$detW,$detH,$srcW,$srcH);
imagecopyresampled($om,$im,0,0,0,0,$detW,$detH,$srcW,$srcH);
$this->showImg($om,$this->fileType,$page);
}
function inputError($boolean){
if(!$boolean){
echo "img input error!";
}
}
function showImg($om,$type,$page){
$om=$this->isNull($om);
$type=$this->isNull($type);
switch($type){
case "jpg":
if($page)
{
$suc=imagejpeg($om);
$this->inputError($suc);
}else{
$suc=imagejpeg($om,$this->dstFile);
$this->inputError($suc);
}
break;
case "gif":
if($page){
$suc=imagegif($om);
$this->inputError($suc);
}else{
$suc=imagegif($om,$this->dstFile);
$this->inputError($suc);
}
break;
case "png":
if($page){
$suc=imagepng($om);
$this->inputError($suc);
}else{
$suc=imagepng($om,$this->dstFile);
$this->inputError($suc);
}
break;
case "bmp":
if($page){
$suc=imagewbmp($om);
$this->inputError($suc);
}else{
$suc=imagewbmp($om,$this->dstFile);
$this->inputError($suc);
}
break;
default:
echo "not you input file type!";
break;
}
}
}
?>
imagecopyresized在GD2中应使用
imagecopyresampled
用这个重取样的函数，这个会做抗锯齿什么的处理吧
// The file 本例将把一幅图像按最宽或最高像素来按比例缩放显示。
$filename = '10.jpg';// Set a maximum height and width
$width = !$_GET["w"]?200:$_GET["w"];
$height = !$_GET["h"]?200:$_GET["h"];// Content type
header('Content-type: image/jpeg');// Get new dimensions
list($width_orig, $height_orig) = getimagesize($filename);if ($width && ($width_orig/$height_orig < $width/$height)) {
$width = ($height / $height_orig) * $width_orig;
} else {
$height = ($width / $width_orig) * $height_orig;
}// Resample
$image_p = imagecreatetruecolor($width, $height);
$image = imagecreatefromjpeg($filename);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);// Output 90为图片质量
imagejpeg($image_p, null,90);
//保存
imagejpeg($image_p, "new\index_10.jpg", 90);
?>