php - Find the method which AJAX GET calls

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I need to find bug in a Wordpress site.
But I can't find the method (function) that the AJAX GET call runs on backend.
That's not admin part of website, but front end part of website.

important
I found the url where AJAX call is sent, but don't know how to find the method/function.

code for sending AJAX call looks like this

I have code for sending XMLHttpRequest something like this:

    var xhr = new XMLHttpRequest();
    xhr.open("GET", ".php?action=logged_in_check");
    xhr.setRequestHeader("X_REQUESTED_WITH","xmlhttprequest");
    xhr.onload = function(){
        console.log(xhr.responseText);
    }
    xhr.send();

There is nothing like add_action() on frontend.

What could you advise? Any technics, advices?

I need to find bug in a Wordpress site.
But I can't find the method (function) that the AJAX GET call runs on backend.
That's not admin part of website, but front end part of website.

important
I found the url where AJAX call is sent, but don't know how to find the method/function.

code for sending AJAX call looks like this

I have code for sending XMLHttpRequest something like this:

    var xhr = new XMLHttpRequest();
    xhr.open("GET", "http://themes.qnimate.com/qplog/wp-admin/admin-ajax.php?action=logged_in_check");
    xhr.setRequestHeader("X_REQUESTED_WITH","xmlhttprequest");
    xhr.onload = function(){
        console.log(xhr.responseText);
    }
    xhr.send();

There is nothing like add_action() on frontend.

What could you advise? Any technics, advices?

• php
• functions
• jquery
• ajax
• javascript

Share Improve this question edited Apr 14, 2017 at 8:42 Yurii Halapup asked Apr 13, 2017 at 20:57 Yurii HalapupYurii Halapup 10144 bronze badges 4

• firstly use the network monitor to look which AJAX call is send, e.g. with firefox : developer.mozilla.org/en-US/docs/Tools/Network_Monitor – mmm Commented Apr 13, 2017 at 21:00
• hello, I found the url where AJAX call is sent, but don't know how to find the method/function. – Yurii Halapup Commented Apr 13, 2017 at 21:07
• then edit your question and details what you have seen, without more informations it's hard to help you – mmm Commented Apr 13, 2017 at 21:10
• Do you have access to the source code of that site? – Tom J Nowell ♦ Commented Aug 12, 2021 at 14:58

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1 Answer 1

Sorted by: Reset to default 0

If the url is something like this admin-ajax.php?example_ajax_request=1&data=1234

The add_action function in the code would be wp_ajax_nopriv_example_ajax_request

So, try to grep the whole of your theme directory or plugin directory for the text.

Example: grep -r 'wp_ajax_nopriv_example_ajax_request' *

The second parameter of the add_action is the function name you're looking for.

See https://codex.wordpress.org/AJAX_in_Plugins#Ajax_on_the_Viewer-Facing_Side for example of how it works.

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