通过PHP创建Excel文件

For creating DOCX files, I'm using phpdocx's software which is working great.

But now I need to create XLSX files via PHP. The data is input via many forms and need to create corresponding Excel files with multiple sheets and graphs etc etc.

Is there any tool (including paid one) out there that can generate Excel files via PHP ?

The closest I'm come across is this - PHPExcel but this is now forwarded to PhpSpreadsheet, which is not yet released.