wp-includes/rest-api.php:740Handles _doing_it_wrong errors.
$function_namestring$messagestring$versionstring|nullfunction rest_handle_doing_it_wrong( $function_name, $message, $version ) { if ( ! WP_DEBUG || headers_sent() ) { return; } if ( $version ) { /* translators: Developer debugging message. 1: PHP function name, 2: WordPress version number, 3: Explanatory message. */ $string = __( '%1$s (since %2$s; %3$s)' ); $string = sprintf( $string, $function_name, $version, $message ); } else { /* translators: Developer debugging message. 1: PHP function name, 2: Explanatory message. */ $string = __( '%1$s (%2$s)' ); $string = sprintf( $string, $function_name, $message ); } header( sprintf( 'X-WP-DoingItWrong: %s', $string ) );}Introduced in 5.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.