fjohnston@avatarasoftware.com
ab7b3b10f9
Implemented the suggested named capture groups (nice trick) in the regexp to pull out only the values we need to perform the calculation. Making use of the null coalescing operator to keep things nice and clean. Note that I did have to add the `PREG_UNMATCHED_AS_NULL` to `preg_match` to ensure PHP returned null (since null coalescing only works on null and not '') when a match wasn't found for a capture group. Also extended the regular expression to handle scientific notation (both positive and negative, and positive and negative exponents) as well as a negative symbol before or after a leading percentage sign.
PhpSpreadsheet
PhpSpreadsheet is a library written in pure PHP and offers a set of classes that allow you to read and write various spreadsheet file formats such as Excel and LibreOffice Calc.
PHP version support
LTS: Support for PHP versions will only be maintained for a period of six months beyond the end of life of that PHP version.
Currently the required PHP minimum version is PHP 7.3.
See the composer.json for other requirements.
Installation
Use composer to install PhpSpreadsheet into your project:
composer require phpoffice/phpspreadsheet
If you are building your installation on a development machine that is on a different PHP version to the server where it will be deployed, or if your PHP CLI version is not the same as your run-time such as php-fpm or Apache's mod_php, then you might want to add the following to your composer.json before installing:
{
"require": {
"phpoffice/phpspreadsheet": "^1.23"
},
"config": {
"platform": {
"php": "7.3"
}
}
}
and then run
composer install
to ensure that the correct dependencies are retrieved to match your deployment environment.
See CLI vs Application run-time for more details.
Additional Installation Options
If you want to write to PDF, or to include Charts when you write to HTML or PDF, then you will need to install additional libraries:
For PDF Generation, you can install any of the following, and then configure PhpSpreadsheet to indicate which library you are going to use:
- mpdf/mpdf
- dompdf/dompdf
- tecnickcom/tcpdf
and configure PhpSpreadsheet using:
// Dompdf, Mpdf or Tcpdf (as appropriate)
$className = \PhpOffice\PhpSpreadsheet\Writer\Pdf\Dompdf::class;
IOFactory::registerWriter('Pdf', $className);
or the appropriate PDF Writer wrapper for the library that you have chosen to install.
Chart Export
For Chart export, we support following packages, which you will also need to install yourself using composer require
- jpgraph/jpgraph (this package was abandoned at version 4.0. You can manually download the latest version that supports PHP 8 and above from jpgraph.net)
- mitoteam/jpgraph (fork with php 8.1 support)
and then configure PhpSpreadsheet using:
Settings::setChartRenderer(\PhpOffice\PhpSpreadsheet\Chart\Renderer\JpGraph::class); // to use jpgraph/jpgraph
//or
Settings::setChartRenderer(\PhpOffice\PhpSpreadsheet\Chart\Renderer\MtJpGraphRenderer::class); // to use mitoteam/jpgraph
One or the other of these libraries is necessary if you want to generate HTML or PDF files that include charts.
Documentation
Read more about it, including install instructions, in the official documentation. Or check out the API documentation.
Please ask your support questions on StackOverflow, or have a quick chat on Gitter.
PHPExcel vs PhpSpreadsheet ?
PhpSpreadsheet is the next version of PHPExcel. It breaks compatibility to dramatically improve the code base quality (namespaces, PSR compliance, use of latest PHP language features, etc.).
Because all efforts have shifted to PhpSpreadsheet, PHPExcel will no longer be maintained. All contributions for PHPExcel, patches and new features, should target PhpSpreadsheet master branch.
Do you need to migrate? There is an automated tool for that.
License
PhpSpreadsheet is licensed under MIT.