jQuery Forum

    CROP URL

    Path to your img crop proccessing file.
    JS
    
    var cropperOptions = {
            cropUrl:'path_to_your_image_cropping_file.php'
    }
                    
    var cropperHeader = new Croppic('yourId', cropperOptions);

    You will be receiving the following data via AJAX POST method as multipart/form-data;
    (note that ajax is limited to same domain requests)

    imgUrl         // your image path (the one we recieved after successfull upload)
                            
    imgInitW      // your image original width (the one we recieved after upload)
    imgInitH     // your image original height (the one we recieved after upload)

    imgW         // your new scaled image width
    imgH         // your new scaled image height

    imgX1         // top left corner of the cropped image in relation to scaled image
    imgY1         // top left corner of the cropped image in relation to scaled image

    cropW         // cropped image width
    cropH         // cropped image height

1. cropData:{
   				"dummyData":1,
   				"dummyData2":"text"
   			}

That plugin page documentation has all example available.

http://www.croppic.net/ 

uploadUrl:'path_to_your_image_proccessing_file.php'

Is the path to file which will upload the original image to server and the
after upload you need to return json data like

{
    "status":"success",
    "url":"path/img.jpg",
    "width":originalImgWidth,
    "height":originalImgHeight
}

for successful image upload or if any error then like
{
    "status":"error",
    "message":"your error message text"
}


After plugin received success response from your JSON, it picked image 
from your server, then path needs to be send as url parameter in your 
image upload ajax  response

Then plugin automatically sets that image for cropping.

For posting cropped image to server you need to mention that file path 
as 

cropUrl:'path_to_your_image_cropping_file.php'

They have a nice documentation, you need to read it carefully and set 
it out.
Even they provided sample PHP code for upload and cropping as well.