Question

I want to run a php script from the command line that is always running and constantly updating a variable.

I then want any php script that is run in the meantime (probably but not necessarily from the web) to be able to read that variable at any time.

Anyone know how I can do this?

Thanks.

Answer 1

Here, you want some kind of inter-process communication mecanism.

You cannot use a PHP variable for that : these are local to the script they’re in.

Which means you’ll have to use some "external" tool to store your data, like, to only speak of a few :

• a file
• a database (SQLite, MySQL, …)
• some shared-memory segment

In each case, you’ll have :

• One script that write to the data-storage space — i.e. your first always running script
• One or many other scripts that will read from the data-store