jquery+php+ajax实现上传进度的多图片上传并生成缩略图代码

<script type="text/javascript"> 
$(document).ready(function() { 
    $("#filelist").niceScroll({ 
        cursorwidth: "8px", 
        cursorborderradius: "0px", 
        cursoropacitymin: 0.1, 
        cursoropacitymax: 0.3 
    }); 
 
    $(".side-pane").niceScroll({ 
        cursorwidth: "8px", 
        cursorborderradius: "0px", 
        cursoropacitymin: 0.1, 
        cursoropacitymax: 0.3 
    }); 
 
    $(".time").timeago(); 
}); 
</script>

<script type="text/javascript"> 
        // <![CDATA[
 
            $('#upload_button').click(function() {
                $('.side-pane').html('');
                $('#upload_button').hide();
                $('#pickfiles').hide();
                $('#upload_info').show();
                $('#upload_info').css("display","inherit");
                uploader.start();
 
                $('#filelist').block({
                    message: '<center><div class="start-message">Upload in Progress</div></center>',
                    css: {
                        border: 'none',
                        backgroundColor: 'none'
                    },
                    overlayCSS: {
                        backgroundColor: '#fff',
                        opacity: '0',
                        cursor: 'wait'
                    }
                });
            });
 
            var uploader = new plupload.Uploader({
                runtimes : 'flash, html5',
                browse_button : 'pickfiles',
                container : 'uploader',
                max_file_size : '10mb',
                url : 'upload.php',
                flash_swf_url : 'uploader/uploader.swf',
                filters : [
                    { title : "Image files", extensions : "jpg,jpeg,gif,png" }
                ]
            });
 
            uploader.bind('Init', function(up, params) {});
            uploader.init();
 
            uploader.bind('FilesAdded', function(up, files) {
                /*
                    @@ Show / hide various elements
                */
                $('.upload-message').hide();
                $('.info-message').hide();
                $('#upload_button').show();
                $('#filelist_header').show();
 
                $.each(files, function(i, file) {
                    $('#filelist').append(
                        '<div id="' + file.id + '" class="filecontainer">' +
                        '<div class="filename"> '+file.name + '</div>'+
                        '<div class="filesize">' + plupload.formatSize(file.size) + '</div>'+
                        '<div class="filestatus" id="status_'+file.id+'">0%</div>'+
                        '<div class="filedel"><a id="remove_'+file.id+'" href="javascript:;"><img src="img/uploader/delete.gif" /></a></div>' +
                        '</div>');
 
                    $('#remove_'+file.id).click(function(e) {
                        uploader.removeFile(file)
                        $('#'+file.id).hide('slow', function() { ('#'+file.id).remove(); });
                    });
                });
 
                up.refresh();
                $('#filelist').animate({scrollTop: $('#filelist').attr("scrollHeight")}, 1500);
            });
 
            uploader.bind('UploadProgress', function(up, file) {
                $('#status_' + file.id).html(file.percent + "%");
                    if(file.percent == 100) {
                        $('#' + file.id).block({
                            message: '',
                            css: {
                                border: 'none',
                                backgroundColor: 'none'
                            },
                            overlayCSS: {
                                backgroundColor: '#fff',
                                opacity: '0.7',
                                cursor: 'wait'
                            }
                        });
                    }
                $('#percent').width(uploader.total.percent+"%");
                $('#upRate').text(Math.ceil(uploader.total.bytesPerSec/1024)+" kb/sec");
            });
 
            uploader.bind('FileUploaded', function(up, file, response) {
                var input = $("#uploaded_photos");
                var data = response.response;
                var details = data.split(',');
                    if(details[0] == 'success') {
                        var photo_html = '<div class="padding-10 hm-photo clearfix"><a href="../upload/source/'+details[4]+'" target="_blank"><img src="../upload/small/'+details[4]+'"></a><p class="small-text light-text">'+details[1]+'</p><abbr class="time small-text" title="'+details[2]+'"></abbr></div>';
                        input.val(input.val() + details[1] + ":");
                    } else {
                        var photo_html = '<div class="clearfix">'+details[1]+'</div>';
                    }
                $('.side-pane').prepend(photo_html);
                $('.time').timeago();
            });
 
            uploader.bind('UploadComplete', function(up, files) {
                $('#upload_info').hide();
                $('#filelist').unblock({
                    onUnblock: function () {
                        $('#filelist_header').hide();
                        $('#filelist').html('<div style="margin-top: 180px; text-align: center;"><strong>ok</strong><br/>All photos have been uploaded.</div>');
                    }
                });
            });
 
        // ]]> 
        </script>

<div id="uploader" class="main-pane"> 
            <div id="filelist_header" class="clearfix"> 
                <div class="filename">Name</div> 
                <div class="filesize">Size</div> 
                <div class="filestatus">Status</div> 
                <div class="filedel"></div> 
                <div></div> 
            </div> 
 
            <div id="filelist"></div> 
 
            <div class="action-btns"> 
                <a id="pickfiles" class="login-button btn">Select files to upload</a> 
                <a href="javascript:;" id="upload_button" class="login-button upload hide">Upload</a> 
            </div> 
 
            <center> 
                <div id="upload_info"> 
                    <div id="upload_info_inner"> 
                        <div class="progressbg"> 
                            <div id="percent" class="progress"></div> 
                        </div> 
                    </div> 
 
                    <div id="unknown"> 
                        <div id="time2go"></div> 
                        <div id="upRate"></div> 
                    </div> 
                </div> 
            </center> 
 
            <form method="POST" action="process.php" id="processupload"> 
                <input type="hidden" name="uploaded_photos" id="uploaded_photos" /> 
                <input type="hidden" name="fkey" value="<?php echo $fkey; ?>" /> 
            </form> 
        </div>

<?php 
/*
    @@ Including the functions.php for using the necessary functions.
*/ 
include('functions.php'); 
 
/*
    @@ This is the file upload class which does all the uploading work.
*/ 
include('class.upload.php'); 
 
if(isset($_FILES["file"])) { 
    /*
        @@ Generating unique name for the photo.
    */ 
    $time = time(); 
    $rand_1 = rand(999, 999999); 
    $rand_2 = rand(999999, 999999999); 
    $rand_3 = rand(); 
    $unique_value = $time.'_'.$rand_1.'_'.$rand_2.'_'.$rand_3; 
 
    /*
        @@ Folder creation for each and every day. This ensures performance even with millions of images.
    */ 
    $folder = date('zY'); 
        if(substr($folder, 0) == 0) { 
            $folder = '367'.date('Y'); 
        } 
 
    /*
        @@ This folder is for the source image files.
    */ 
    $pfolder = '../upload/source/';  
        if(!is_dir($pfolder)) { 
            mkdir($pfolder, 0755); 
        } 
 
    /*
        @@ This folder is for the image files with 120x120 dimensions.
    */ 
    $tfolder = '../upload/small/'; 
        if(!is_dir($tfolder)) { 
            mkdir($tfolder, 0755); 
        } 
 
    /*
        @@ Assigning the upload file to the upload class for all the processing.
    */ 
    $handle = new Upload($_FILES["file"]); 
        if($handle->uploaded) { 
            $extension = $handle->file_src_name_ext; 
            $mime = $handle->file_src_mime; 
 
                if(($mime == 'image/gif') || ($mime == 'image/jpg') || ($mime == 'image/png') || ($mime == 'image/bmp') || ($mime == 'image/pjpeg') | ($mime == 'image/jpeg')) { 
                    /*
                        @@ Check if the uploaded filetype is an image or not.
                    */ 
                    if(($extension == 'gif') || ($extension == 'jpg') || ($extension == 'jpeg') || ($extension == 'png') || ($extension == 'bmp') || ($extension == 'pjpeg')) { 
                        if($handle->image_src_x > 500) { 
                                /*
                                    @@ Check if the filesize is smaller than 10 MB. 10 MB = 10485760 bytes.
                                */ 
                            if($handle->file_src_size < 10485760) { 
                                /*
                                    @@ Getting the actual file name (with and without extension) and sanitizing it for inserting in the database.
                                */ 
                                $real_name = clean_input($handle->file_src_name); 
                                $body_name = clean_input($handle->file_src_name_body); 
 
                                $handle->file_new_name_body = $unique_value.'_'.$body_name; 
                                $handle->Process($pfolder); 
 
                                $handle->image_resize = true; 
                                $handle->image_ratio_crop = 'T'; 
                                $handle->image_y = 120; 
                                $handle->image_x = 120; 
                                $handle->file_new_name_body = $unique_value.'_'.$body_name; 
                                $handle->Process($tfolder); 
 
                                    if($handle->processed) { 
                                        $actual_name = $handle->file_dst_name; 
                                        $size = ceil($handle->file_src_size / 1024); 
 
                                        ## Sending photo details back to the uploader. 
                                        $date = date("c", $time); 
 
                                            ## Reducing the length of real name if it exceeds 50 characters. 
                                            if(strlen($real_name) > 50) { 
                                                $real_name = substr($real_name, 0, 50).'..'; 
                                            } 
                                            echo 'success,'.$real_name.','.$date.','.$folder.','.$actual_name; 
                                    } else { 
                                        echo 'error,<div class="alert alert-error"><strong>Upload Error</strong><br/>There was an error uploading the photo.</div>'; 
                                    } 
                            } else { 
                                echo 'error,<div class="alert alert-error"><strong>Upload Error</strong><br/>The photo is bigger than the allowed upload size of <strong>10MB</strong>.</div>'; 
                            } 
                        } else { 
                            echo 'error,<div class="alert alert-error"><strong>Upload Error</strong><br/>You are trying to upload a photo with smaller dimensions.</div>'; 
                        } 
                    } else { 
                        echo 'error,<div class="alert alert-error"><strong>Upload Error</strong><br/>Only photo uploads are allowed.</div>'; 
                    } 
                } else { 
                    echo 'error,<div class="alert alert-error"><strong>Upload Error</strong><br/>Only photo uploads are allowed.</div>'; 
                } 
        } else { 
            echo 'error,<div class="alert alert-error"><strong>Upload Error</strong><br/>An upload error occured.</div>';            
        } 
    /*
        @@ Return the json response to the script.
    */ 
    $handle->Clean(); 
} else { 
    echo 'error,<div class="alert alert-error"><strong>Upload Error</strong><br/>An upload error occured.</div>'; 
}