Array

<?php

$myReturnJSON = array();

$myReturnJSON[] = (
    "NumeroSenha" => $myNumSenha,
    "IDSenha"     => $myGer_Codigo,
    "NomeSenha"   => $myNameSenha,
    "ServCodigo"  => $myServCodigo,
    "IDServico"   => $myTag,
    "Previsao"    => $myTempoEspera,
    "Status"      => $myStatus,
    "StatusCode"  => $myStatusCode
);

echo json_encode($myReturnJSON);