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Description

Send a JSON response back to an AJAX request, and die().

Usage

<?php wp_send_json( $response ) ?>

Parameters

$response

(mixed) (required) Variable (usually an array or object) to encode as JSON, then print and die.

Default: None

Examples

jQuery(document).ready(function(){

    jQuery('#btn_save').click(function(e){
       e.preventDefault();
       jQuery.post(pluginUrl+'ajax/save_field.php',jQuery('#my-form').serialize(), function(data) {                        
           alert(data.message + " ID:" + data.ID);
           //This will alert "Saved ID:1"
       });
    });

});

save_field.php

<?php
// .................
// nonce checks ....
// .................

$return = array(
    'message'  => 'Saved',
    'ID'       => 1
);

wp_send_json($return);

Default Usage

Change Log

• Since: 3.5.0

Source File

wp_send_json() is located in wp-includes/functions.php

Related

wp_send_json_success(), wp_send_json_error()