Log errors to Wordpress debug.log
if ( ! function_exists( 'jpg_write_error_to_log' ) ) {
function jpg_write_error_to_log ( $log ) {
if ( is_array( $log ) || is_object( $log ) ) {
error_log( print_r( $log, true ) );
} else {
error_log( $log );
}
}
}