php - How to know whether request has come via jQuery $.ajax() -


i determine whether or not request rest api has been made jquery $.ajax() method.

before answering question 1 of obvious answers of adding boolean data sent server, or adding header, not want this...

obviously can achieved so:

$.ajax({     data: {          sentviaajax: 'true'     } });

however, various reasons boolean/additional header remain hidden code.

therefore, know jquery send other data in particular form server when makes request?

i have tried printing out $_request array not contain other data sent. there unique headers out for? if so, reliable, in, there?

jquery sends following header on non-cross-domain ajax requests:

x-requested-with: xmlhttprequest

so header on request.


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