wp-includes/class-wp-ajax-response.php:152Display XML formatted responses.
public function send() { header( 'Content-Type: text/xml; charset=' . get_option( 'blog_charset' ) ); echo "<?xml version='1.0' encoding='" . get_option( 'blog_charset' ) . "' standalone='yes'?><wp_ajax>"; foreach ( (array) $this->responses as $response ) { echo $response; } echo '</wp_ajax>'; if ( wp_doing_ajax() ) { wp_die(); } else { die(); } }Introduced in 2.1.0. One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
none to never.verified against sourcesrc/wp-includes/class-wp-ajax-response.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.