How to write async PHP code

Question

I have some code that does something like this pseudocode:

Use CURL to get site1 into a variable
Use CURL to get site2 into a variable
Use CURL to get site3 into a variable
Use CURL to get site4 into a variable

Do lots of processing on each

Produce output

echo output

Currently this takes a long time occasionally.

I'd like to get the CURL bit to run in parallel so I can get things to speed up.

How do I do that?

Answer 1

I think you are looking for this http://php.net/manual/en/function.curl-multi-init.php parallel cURL requests.