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
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( 'response' => null, ) ); } else { die; } }
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.