jcrop+Uploadify+php无刷新头像上传

jcrop+Uploadify+php无刷新头像上传，经过学习和研究做成的一个例子，共享出来以供大家参考和学习，有不合适的地方欢迎大家拍砖，至于jcrop和uploadify教程以后会逐渐整理出来

裁切图片类（注:例子中没用到，需要用的可以自己修改）

/**

* 裁切不同图片的一个类，大家可以看着用

*/

class cutImages{

private $filename; //原文件全路径

private $x; //横坐标

private $y; //纵坐标

private $x1; //源图宽

private $y1; //源图高

private $ext; //文件后缀

private $width=120; //宽

private $height=120; //高

private $jpeg_quality=90; //图片生成的保真度 范围0（质量最差）-100（质量最好）

public function __construct(){

}

/**

* 初始化截图对象

* @param unknown_type $filename

* @param unknown_type $x

* @param unknown_type $y

* @param unknown_type $x1

* @param unknown_type $y1

*/

public function initialize($filename,$x,$y,$x1,$y1){

if(file_exists($filename)){

$this->filename = $filename;

$pathinfo = pathinfo($filename);

$this->ext = strtolower($pathinfo['extension']); //将扩展名转为小写

}else{

$e = new Exception(‘the file is not exists!’,1050);

throw $e;

}

$this->x = $x;

$this->y = $y;

$this->x1 = $x1;

$this->y1 = $y1;

}

/**

* 生成截图

* 根据不同的图片格式生成不同的截图

*/

public function generateShot(){

switch($this->ext){

case ‘jpg’:

$this -> generateJpg();

break;

case ‘png’:

$this -> generatePng();

break;

case ‘gif’:

$this -> generateGif();

break;

default:

return false;

}

}

/**

* 获取生成的小图的文件

*/

public function getShotName(){

$pathinfo = pathinfo($this->filename);

$fileinfo = explode(‘.’,$pathinfo['basename']);

$cutfilename = $fileinfo[0].’_small’.$this->ext;

return $pathinfo['dirname'].’/’.$cutfilename;

}

/**

* 生成jpg图片

*/

public function generateJpg(){

$shotname = $this->getShotName();

$img_r = imagecreatefromjpeg($this->filename); //从url新建一图像

$dst_r = imageCreateTrueColor($this->width,$this->height); //创建一个真色源的图片

imagecopyresampled($dst_r,$img_r,0,0,$this->x,$this->y,$this->width,$this->height,$this->x1,$this->y1);

imagejpeg($dst_r,$shotname,$this->jpeg_quality);

return $shotname;

}

/**

* 生成png图片

*/

public function generatePng(){

$shotname = $this->getShotName();

$img_r = imagecreatefrompng($this->filename); //从url新建一图像

$dst_r = imageCreateTrueColor($this->width,$this->height); //创建一个真色源的图片

imagecopyresampled($dst_r,$img_r,0,0,$this->x,$this->y,$this->width,$this->height,$this->x1,$this->y1);

imagepng($dst_r,$shotname);

return $shotname;

}

/**

* 生成gif图片

*/

public function generateGif(){

$shotname = $this->getShotName();

$img_r = imagecreatefromgif($this->filename);

$dst_r = imageCreateTrueColor($this->width,$this->height);

imagecopyresampled($dst_r,$img_r,0,0,$this->x,$this->y,$this->width,$this->height,$this->x1,$this->y1);

if(imagegif($dst_r,$shotname)){

return $shotname;

}

}

}

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