<?php

$meuArray = array('acesso' => array('KMEntrada' => 1000, 'HorarioSaida' => '2017-06-16 14:20:58', 'Status' => 0));
 
echo $meuArray['acesso']['KMEntrada'] ."\n";
 
echo $meuArray['acesso']['HorarioSaida'] ."\n";
 
echo $meuArray['acesso']['Status'] ."\n";