title: Make large amount of excel file
body: <p>I need your help,</p>
  
  <p>Hi,</p>
  
  <p>I have to find a solution in php in order to create a large amount of Excel File.</p>
  
  <p>I make a huge amount of variable and put it in a Phpspreadsheet object.</p>
  
  <p>But sometime the time to make only one Excel file is around 20 minutes. SO i need to start this function during the night. But i have a problem of memory and/or execution time .</p>
  
  <p>It's a PHP backend server. It's not for users, only for administrators.</p>
  
  <p>It's a loop with :
  - Find the data in the Data Base (it take a lot of time)
  - With the data, make the Excel File
  - Export it</p>
  
  <p>I would like to make all th request at the same time :) </p>
  
  <p>is There a solution to make asynchronous function in order to make all the Excel file  at the same time and save it in the server ? (or a better solution).</p>
  
  <p>Thank you very much for your futur help.</p>