Sends a JSON response back to an Ajax request.
Parameters
$responsemixedrequired- Variable (usually an array or object) to encode as JSON, then print and die.
$status_codeintoptional- The HTTP status code to output.
Default:
null $flagsintoptional- Options to be passed to json_encode(). Default 0.
Source
* @since 5.6.0 The `$flags` parameter was added.
*
* @param mixed $response Variable (usually an array or object) to encode as JSON,
* then print and die.
* @param int $status_code Optional. The HTTP status code to output. Default null.
* @param int $flags Optional. Options to be passed to json_encode(). Default 0.
*/
function wp_send_json( $response, $status_code = null, $flags = 0 ) {
if ( wp_is_serving_rest_request() ) {
_doing_it_wrong(
__FUNCTION__,
sprintf(
/* translators: 1: WP_REST_Response, 2: WP_Error */
__( 'Return a %1$s or %2$s object from your callback when using the REST API.' ),
'WP_REST_Response',
'WP_Error'
),
'5.5.0'
);
}
if ( ! headers_sent() ) {
header( 'Content-Type: application/json; charset=' . get_option( 'blog_charset' ) );
if ( null !== $status_code ) {
status_header( $status_code );
}
}
echo wp_json_encode( $response, $flags );
if ( wp_doing_ajax() ) {
wp_die(
'',
'',
array(
NOTE: not need to include wp_die() or exit(0) after using wp_send_json() as it automatically calls wp_die() .
If this is a REST response (i.e. via the REST API), use WP_REST_Response or WP_Error, instead.