PHP+ajaxfileupload+jcrop plug-in perfectly realizes avatar upload and cropping

PHP+ajaxfileupload+jcrop plug-in perfectly realizes avatar upload and cropping_PHP tutorial

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Release： 2016-07-13 10:28:48

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I spent some time yesterday integrating the avatar plug-in. I pieced together the results. Let’s take a look at the effect first

PHP+ajaxfileupload+jcrop plug-in perfectly realizes avatar upload and cropping_PHP tutorial

1. First use the ajaxfileupload plug-in to do asynchronous upload. I originally wanted to create an upload progress effect here, but the technology was limited and failed. I also set a file size limit for the upload button, but due to browser compatibility issues, it is not perfect and there are still many problems that need to be solved between IE6--IE9

The getFileSize function is a function used to determine the file size

Copy code The code is as follows:

function getFileSize(fileName) {
/ /console.log($("#" + fileName).val());
if($("#" + fileName)[0].files) {
var byteSize = $("#" + fileName)[0].files[0].size;
(byteSize);
byteSize = Math.ceil(byteSize / 1024) //KB
return byteSize;//KB
}

2. Button upload event binding

Copy code

The code is as follows:

$("#btnUpload").click(function () {
var allowImgageType = ['jpg', 'jpeg', 'png', 'gif'];
              var file = $("#file1").val();
                                                                                                                                     if (file.length > 0 ) {
if(byteSize > 2048) {
alert("The uploaded attachment file cannot exceed 2M");
return;
                     }
                                                                                                                                                                                                              ");
                                                                                            ; > if( $.inArray(ext, allowImgageType) != -1) {
                                                                                                            Select jpg, jpeg, png, gif type pictures");
                                                                                                                                                                                                                                                  ;                                                                                                                    >
3. After the upload is successful, return the image path and initialize image cropping. For image cropping, use ajax to request directly to php

Copy code

The code is as follows:

function ajaxFileUpload() {
                $.ajaxFileUpload({
                    url: 'action.php', //用于文件上传的服务器端请求地址
                    secureuri: false, //一般设置为false
                    fileElementId: 'file1', //文件上传空间的id属性
                    dataType: 'json', //返回值类型一般设置为json
                    success: function (data, status) //服务器成功响应处理函数
                    {
                        //var json = eval('(' + data + ')');
                        //alert(data);
                        $("#picture_original>img").attr({src: data.src, width: data.width, height: data.height});
                        $('#imgsrc').val(data.path);
                        //alert(data.msg);

//Container ID of the main picture
,
                                                                                                                                                                                                                  // Thumbnail configuration, ID: container ID; width, height: thumbnail size
                                                         ,height:200},{id:"picture_50 ",width:50,height:50},{id:"picture_30",width:30,height:30}],
                                                                                      : {width:200,height:200 },
   .val(c.x);
                                                                                                                                                                                                                                     through                                                               >                                                                                                                                                                                                                                                                                                                         ();
                                                                              alert(e);
                                                                 )
                return false;
            }

            $('#btnCrop').click(function() {
                $.getJSON('action2.php', {x: $('#x1').val(), y: $('#y1').val(), w: $('#cw').val(), h: $('#ch').val(), src: $('#imgsrc').val()}, function(data) {
                    alert(data.msg);
                });
                return false;
            });