Programming VIP

Use scenarios: filter data by date Following are common code blocks for individuals: <?php use yii\helpers\Html; use kartik\grid\GridView; $visible ? $url = 'awards' : $url = 'index'; ?> <div class="awards-record-index"> <?= GridView::widget([ 'dataProvider' => $dataProvider, ' ...

Using EasyPoi to export a large amount of data to Excel This project is managed by maven. The dependencies of EasyPoi in the pom file are: <! - easypoi dependence - > The role of easypoi parent package is well known to all. 2.easypoi-annotation basic annotation package, whi ...

Article directory 1, configuration 2. Installation module: 3. Reading and writing: Note 1: Note 2: 3. demo code: 4. Read all rows under all worksheets of an Excel table 5. Merge all worksheets under an Excel table (or merge multiple Excel tables ...

In the process of developing small programs, we may have the requirement of exporting batch data from our cloud database to excel tables. If writing directly in the applet is not possible, so we need to use the cloud development function of the appl ...

Business requirements are as follows: 1. Convert Excel uploaded by users to HTML for page display (Excel document format is optional) 2. Convert Excel uploaded by users to PDF for download (no page change, only on one PDF) In response to the a ...

1. The difference between HSSF Workbook and SXSSF Workbook HSSF Workbook: A version of Excel 2003 (including 2003) with an extension of. xls. A table supports up to 65536 rows of data, 256 columns, that is, a sheet page, which can export up to 6 weeks of data. XSSF Workbook: Operates Excel 2007-2010 version with the extension. xlsx uses diffe ...

I. 01 knapsack problemTitle Description: There are n items with wi and vi weight and value respectively. From these items, items with total weight not exceeding W are selected, and the maximum value of the total value in all the selection schemes is ...

Because of the need of the project, we need an online preview of office function. The editorial started with the method provided by Microsoft, which is simple and fast, but does not meet the development needs of the editorial. Another way is to convert the file into an html file and preview the html file. Small partners interested in Microsoft ...

In data processing, it is often necessary to associate the related attributes in Excel with spatial data. The data format in Excel is relatively free. Sometimes the data in Excel table contains special symbols such as line breaks. When the data c ...

Business Background In PHP environment, the export function is optimized and transformed, and the single synchronous export data volume is more than 20,000. PHP 5.6 + PHPExcel. This time PHP 7.2 + php-ext-excel-export was replaced by PHP 5.6 + PHPExcel. Official github address https://github.com/viest/php-ext-excel-export Extended installation ...