php+croppic.js实现剪切上传图片功能

// css 部分
#yourId {
  width: 200px;
  height: 150px;
  position:relative; /* or fixed or absolute */
}
// html 部分
<div id="yourId"></div>
// js部分
var options = [
　　uploadUrl:'图片上传地址',
　　cropUrl: '图片裁切后发送的地址',
　　// 等等各种参数配置信息
];
var cropperHeader = new Croppic('yourId',options);

uploadUrl:'制定上传的地址',
uploadData:{
　　"dummyData":1,
　　"dummyData2":"text"
}

{
　　 "status":"success",
  "url":"返回成功后的图片url地址",
  "width":源图片宽度, 
　　 "height":源图片高度
}

{
 "status":"error",
 "message":"这里是你的失败提示信息"
} 

var cropperOptions = {
  uploadUrl:'裁切后请求的地址',
  uploadData:{
   "dummyData":1,
   "dummyData2":"text"
  }
}
var cropperHeader = new Croppic('yourId', cropperOptions);

$request = app('request');
// 上传服务器的图片路径
$imgUrl = $request->body['imgUrl'];
// 原始图片宽高
$imgInitW = $request->body['imgInitW'];
$imgInitH = $request->body['imgInitH'];
// 新缩放的图片宽高
$imgW = $request->body['imgW'];
$imgH = $request->body['imgH'];
// 与缩放图像相关的裁剪图像的左上角
$imgY1 = $request->body['imgY1'];
$imgX1 = $request->body['imgX1'];
// 裁剪图像宽高
$cropW = $request->body['cropW'];
$cropH = $request->body['cropH'];
// 角度
$angle = $request->body['rotation'];

$temp_name    = "crop_temp_" . uniqid();
$temp_path    = sys_get_temp_dir() . "/";
$output_filename = $temp_path . $temp_name;
$what      = getimagesize($imgUrl);
// 创建画布并载入图像
switch (strtolower($what['mime'])) {
  case 'image/png':
    $source_image = imagecreatefrompng($imgUrl);
    $type     = '.png';
    break;
  case 'image/jpeg':
    $source_image = imagecreatefromjpeg($imgUrl);
    $type     = '.jpeg';
    break;
  case 'image/gif':
    $source_image = imagecreatefromgif($imgUrl);
    $type     = '.gif';
    break;
  default:
    throw new \Exception('不支持的图片类型');
}
if (!is_writable(dirname($output_filename))) {
  throw new \Exception('文件无法写入');
}
// 创建一幅真彩色的图像，从而支持更为丰富的色彩，gif文件不可使用
$resizedImage = imagecreatetruecolor($imgW, $imgH);
if ($type == '.png') {
  // 将黑色定义为透明色
  imagecolortransparent($resizedImage, imagecolorallocate($resizedImage, 0, 0, 0));
}
imagecopyresampled($resizedImage, $source_image, 0, 0, 0, 0, $imgW, $imgH, $imgInitW, $imgInitH);
// 旋转图像
$rotated_image = $angle ? imagerotate($resizedImage, -$angle, 0) : $resizedImage;
// 获取图像宽高
$rotated_width = imagesx($rotated_image);
$rotated_height = imagesy($rotated_image);
// 旋转后 - 缩放后
$dx = $rotated_width - $imgW;
$dy = $rotated_height - $imgH;
// 裁剪旋转后的图片到图像
$cropped_rotated_image = imagecreatetruecolor($imgW, $imgH);
if ($type == '.png') {
  // 设置黑色为透明
  imagecolortransparent($cropped_rotated_image, imagecolorallocate($cropped_rotated_image, 0, 0, 0));
}
imagecopyresampled($cropped_rotated_image, $rotated_image, 0, 0, $dx / 2, $dy / 2, $imgW, $imgH, $imgW, $imgH);
// 剪切图像到规定区域
$final_image = imagecreatetruecolor($cropW, $cropH);
if ($type == '.png') {
  imagecolortransparent($final_image, imagecolorallocate($final_image, 0, 0, 0));
}
imagecopyresampled($final_image, $cropped_rotated_image, 0, 0, $imgX1, $imgY1, $cropW, $cropH, $cropW, $cropH);
// 最后输出图像到文件,就可以直接使用file_get_content('output_filename'.$type)获取图片了
imagepng($final_image, $output_filename . $type);
/**
 * 这里需要进行上传服务器操作
 */
echo json_encode([
  'status' => 'success',
  'url'  => $output_filename . $type,
]);
// 最后删除缓存图片
//unlink($output_filename . $type);

var crop_image_src = 'image_src';
  var croppedOptions = {
    cropUrl: 'http://deng.com/m/tool/crop_pic/crop',
    modal: true,
    doubleZoomControls: false,
    enableMousescroll: true,
    imgEyecandyOpacity: 0.4,
    rotateFactor: 90,
    zoomFactor: 20,
    outputUrlId: 'image_input',
    // loadPicture: '加載圖片',
    processInline: true,
    loaderHtml: '<div class="loader bubblingG"><span id="bubblingG_1"></span><span id="bubblingG_2"></span><span id="bubblingG_3"></span></div> ',
    onBeforeImgUpload: function () {
      crop_image_src = $('#image_input').val();
    },
    onAfterRemoveCroppedImg: function () {
      var res = confirm('您是要使用原图还是清除图片？\n\r[确认]使用原图，[取消]清除图片');
      if (res) {
        $('#image_input').val(crop_image_src);
        $('#cropContainerEyecandy').prepend('<img class="croppedImg" src=' + crop_image_src + ' width="100%">');
      } else {
        $('#image_input').val('');
        $('.croppedImg').remove();
      }
    },
    onReset: function () {
      var res = confirm('您是要使用原图还是清除图片？\n\r[确认]使用原图，[取消]清除图片');
      if (res) {
        $('#image_input').val(crop_image_src);
        $('#cropContainerEyecandy').prepend('<img class="croppedImg" src=' + crop_image_src + ' width="100%">');
      } else {
        $('#image_input').val('');
      }
    },
    onError: function (errormessage) {
      alert('onError:' + errormessage)
    }
  };
  var cropperBox = new Croppic('cropContainerEyecandy', croppedOptions);