php 实现批量的下载pdf (使用filedownload)

控制器部分

生成pdf 的方法 https://github.com/KnpLabs/snappy

public function actionExport(){    set_time_limit(120);    $cache = Yii::$app->cache;    $cache->keyPrefix = "report_";    // init params    $dir_store = Yii::getAlias('@runtime/htmlconverter');    $params = json_decode($_GET['sid_list']);    $count = count($params);    $zip_name = $dir_store . '/运营商报告(' . $count . '份)_' . date('YmdHis') . '.zip';    $zip = new \ZipArchive();    // debug log    $file_log = $dir_store . '/log_export';    $cid = isset($this->biz['id']) ? $this->biz['id'] : '没有登陆';    file_put_contents($file_log, date('YmdHis') . ' CID:' . $cid . ' 开始导出' . $count . '份pdf文件' . PHP_EOL, FILE_APPEND);    foreach ($params as $key => $val) {        $val = is_object($val) ? get_object_vars($val) : $val;        $sid = $val['sid'];        $tel = $val['tel'] ?: '';        // gen report        if ((YII_ENV == 'prod') && $cache->exists($sid)) {            $html = $cache->get($sid);        } else {            $html = $this->reportDetailV2($sid, true, $cache);        }        // gen pdf        $file_name = "Report_" . $tel . "_" . $sid . ".pdf";        Yii::$app->htmlToPdf->convert($html, ['file_name' => $file_name, 'file_exists' => true]);        $file_path = $dir_store . '/' . $file_name;        if (!file_exists($file_path)) {            file_exists($zip_name) && @unlink($zip_name);            return 'error';        }        // begin zip        if ($zip->open($zip_name, \ZIPARCHIVE::CREATE) === true) {            $zip->addFromString($file_name, file_get_contents($file_path));        }        @unlink($file_path);    }    $zip->close();    // give zip pdf file to client    header('Set-Cookie: fileDownload=true; path=/');    header('Content-Description: File Transfer');    header('Content-Type: application/octpdfet-stream');    header('Content-Transfer-Encoding: binary');    header('Cache-Control: must-revalidate');    header('Content-Type: application/zip');    header('Content-disposition: attachment; filename=' . basename($zip_name));    header('Content-Length: ' . filesize($zip_name));    $pdf_info = readfile($zip_name);    file_exists($zip_name) && @unlink($zip_name);    file_put_contents($file_log, date('YmdHis') . ' CID:' . $cid . ' 导出完成' . PHP_EOL, FILE_APPEND);    return $pdf_info;}

html 部分:

<script src="/UI/js/jquery-ui.min.js"></script><script src="/UI/js/jquery.fileDownload.js"></script><link rel="stylesheet" type="text/css" href="/UI/report/css/jquery-ui.css?version=1.07"/><link type="text/css" rel="stylesheet" href="/UI/report/css/gritter.css?version=1.07"/><style>    .ui-dialog .ui-dialog-titlebar-close {        position: absolute;        right: .3em;        top: 50%;        width: 51px;        margin: -8px 0 0 0;        padding: 0px;        height: 20px;    }    .ui-widget-header {        border: 1px solid #3c8dbc;        background: #3c8dbc;        color: #ffffff;        font-weight: bold;    }    .ui-button-icon-only .ui-icon {        display: none;    }</style><section class="content">    <div class="box">        <div class="box-body">            <form class="form-inline" method="get">                <button id="file_export" class="btn btn-success">批量导出PDF报告</button>            </form>        </div>    </div>    <div id="preparing-file-modal" title="报告合成中..." style="display: none;">        报告合成中（50份需要1分钟左右）, 请您耐心等待...        <div class="ui-progressbar-value ui-corner-left ui-corner-right" style="width: 100%; height:22px; margin-top: 20px;"></div>    </div>    <div id="error-modal" title="Error" style="display: none;">        报告合成失败，请稍后重新尝试...    </div>    <div class="box">        <div class="box-body table-responsive no-padding">            <table class="table table-hover" id="data_table">                <thead>                <tr>                    <th>                        <input type="checkbox" id="toggle_checkbox" onClick="toggle(this)"/>&nbsp;<sapn                            id="toggle_show">本页全选                        </sapn>                        报告编码                    </th>                    <th>生成时间</th>                    <th>操作</th>                </tr>                </thead>                <tbody>                <?php if (!empty($models)): ?>                    <?php foreach ($models as $list): ?>                        <tr>                            <td>                                <?php if (isset($list['status_report']) && 0 == $list['status_report']) { ?>                                    <input type="checkbox" name="export_pdf" class="item-checkbox" attr_tel="<?= $list['tel'] ;?>" value="<?= $list['sid']; ?>">                                <?php } else { ?>                                    &nbsp;&nbsp;&nbsp;                                <?php } ?>                                <?= $list['sid'] ?></td>                            <td><?= (isset($list['report_create_time']) && isset($list['status_report']) && 0 == $list['status_report']) ? date('Y-m-d H:i:s', $list['report_create_time']) : '' ?></td>                            <td align="">                                <?php if (isset($list['status_report']) && 0 == $list['status_report']): ?>                                    <a href="<?= \Yii::$app->urlManager->createUrl(['report/detail', 'no' => $list['sid']]); ?>"                                       type="button" target="_blank" class="btn btn-info btn-sm">查看</a>                                    <a href="<?= \Yii::$app->urlManager->createUrl(['report/detail', 'no' => $list['sid'], 'image_dow' => 1]); ?>"                                       type="button" class="btn btn-primary btn-sm">下载</a>                                <?php elseif ((2 == $list['status_report']) && $list['status'] == 0 && $need_report): ?>                                    <a href="<?= \Yii::$app->urlManager->createUrl(['report/rebuild', 'no' => $list['sid']]); ?>"                                       type="button" target="_self" class="btn btn-primary btn-sm">重新生成</a>                                <?php endif; ?>                            </td>                        </tr>                    <?php endforeach; ?>                <?php endif; ?>                </tbody>            </table>        </div>        <div class="box-footer clearfix table_pagination">            <div class="pull-left">                <?= LinkPager::widget(['pagination' => $provider->pagination]) ?>            </div>        </div>    </div></section><script type="text/javascript">    $(function () {        // checkbox click event        $('input[type=checkbox].item-checkbox').click(function(){            var length_total = $('input[type=checkbox].item-checkbox').length;            var length_choosed = $('input[type=checkbox].item-checkbox:checked').length;            var toggle_checkbox = $("#toggle_checkbox");            if (length_total === length_choosed && !toggle_checkbox.prop('checked')) {                toggle_checkbox.prop('checked', true);            }            if (length_total !== length_choosed && toggle_checkbox.prop('checked')) {                toggle_checkbox.prop('checked', false);            }        });        // export file        $("#file_export").click(function () {            // filter checkbox            var check_box = $('input[type=checkbox].item-checkbox:checked');            if (!check_box.length) {                alert('请选择要导出的报告');                return false;            }            //init params            var sid_list_arr = [];            check_box.map(function (key, val) {                var sid = $(this).val();                var tel = $(this).attr('attr_tel');                var item = {sid: sid, tel:tel};                sid_list_arr.push(item);            });            // fileDownload            var sid_json_list = JSON.stringify(sid_list_arr, null, 2);            var url_export_pdf = '/report/export?sid_list=' + sid_json_list;            var preparingFileModal = $("#preparing-file-modal");            // show waiting status with no close button            var toggle_checkbox = $("#toggle_checkbox");            preparingFileModal.dialog({modal: true});            var close_button = $('[type=button].ui-button');            close_button.css('display', 'none');            $.fileDownload(url_export_pdf, {                    successCallback: function (url) {                        check_box.map(function (key, val) {                            $(val).prop('checked', false);                        });                        toggle_checkbox.prop('checked', false);                        preparingFileModal.dialog('close');                    },                    failCallback: function (responseHtml, url) {                        // show error status with close button                        preparingFileModal.dialog('close');                        close_button.css('display', 'block');                        $("#error-modal").dialog({modal: true});                    }                }            );            return false;        });    });    function toggle(source) {        var checkboxes = document.getElementsByName('export_pdf');        for (var i = 0, n = checkboxes.length; i < n; i++) {            checkboxes[i].checked = source.checked;        }    }</script>