[FIXED] How to detect if it is an AJAX request in WordPress?

Issue

Is there anyway to detect if the current server operation is currently an AJAX request in WordPress?

For example:

is_ajax()

Solution

Update: since WordPress 4.7.0 you can call a function wp_doing_ajax(). This is preferable because plugins that "do Ajax" differently can filter to turn a "false" into a "true".

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Original answer:

If you're using Ajax as recommended in the codex, then you can test for the DOING_AJAX constant:

if (defined('DOING_AJAX') && DOING_AJAX) { /* it's an Ajax call */ }

Answered By - webaware