title: Execute a function in the background
body: <p>I'm making a reminder system which can send emails at a date and time set in each reminder.</p>
  
  <p>I want there to be an automated function that executes this email-sending script in the background, so that while the server is on, this function will run without interrupting other processes.</p>
  
  <p><strong>Edit:</strong> 
  I am running PHP on Windows 10.</p>