return array (array) of a function in php

I am storing the data of a database in an array in a file called funcoes.php :

    while($line = mysqli_fetch_array($execute)){
        $tabela[$a][$b] = $line['Activit'];
        $tabela[$a][$b+1] = $line['Usuario'];
        $tabela[$a][$b+2] = $line['Data_monit'];
        $a++;
    }
    return array($tabela);

and insert the returned array into another array into another filter.php:

 $tabela = corrige_filter($data, $modulo, $usuario, $conexao);
 while($a < 10){
 echo '<tr>';
 echo '<td>'.$tabela[$a][$b].'</td>';
 echo '<td>'.$tabela[$a][$b+1].'</td>';
 echo '<td>'.$tabela[$a][$b+2].'</td>';
 echo '</tr>';
 $a++;
 }

As expected when I print the table, it does not return anything, so my question is, how to pass the array from the first function to another array with the same array format.