<?php
$linha = '500 - Antonio: Idade: 35 anos';
$linha;
echo $novaLinha . PHP_EOL;
PD9waHAKCiRsaW5oYSA9ICc1MDAgLSBBbnRvbmlvOiBJZGFkZTogMzUgYW5vcyc7CiRub3ZhTGluaGEgPSBwcmVnX21hdGNoKCcjXlxkIycsICRsaW5oYSkgPwogICAgICAgICAgICAgc3ByaW50ZignSWQ6ICVzJywgJGxpbmhhKSA6CiAgICAgICAgICAgICAkbGluaGE7CgplY2hvICRub3ZhTGluaGEgLiBQSFBfRU9MOw==