Problem with Logic Listing with 3 information

Question

I am receiving from the database several clients who have contracts and each contract of these has several documents... how can I list this using vectors in php? 8 years since I was away from the codes and I’m going back to 1 week... sorry my ignorance... I’m not able to solve this logic...

ex:
cli1 - cont1 - doc1
cli1 - cont1 - doc2
cli2 - cont1 - doc1
cli2 - cont2 - doc1
cli2 - cont2 - doc2

print as follows:

• Cli1
  • cont1
  • doc1
  • doc2
• Cli2
  • cont1
  • doc1
  • cont2
  • doc2
  • doc2

I was traveling in the vectors and did not get anything... please... could someone put a resolution model here please?? my logic went to bag! Thank you!

I’m almost there... However, there are no records... follow the code of the part that prints the regsitro documents only, ignoring the part of customers to facilitate the view and I thank you very much for the help _/_:

        If($auxCont=="")//primeiro contrato
        {
            $contrato = "ID do Contrato: ".$dados->Campo("IDContrato");
            $html.=ImLinCSS(array($contrato), $arr_largCol, $arr_alinCol, $lin, "ContSubOn1");
            $auxCont=$dados->Campo("IDContrato");
        }
        if($auxCont == $dados->Campo("IDContrato")) //se for o mesmo contrato do registro
        {
            //imprime os documentos do contrato
            $doc = $dados->Campo("Descricao");
            $html.=ImLinCSS(array($doc), $arr_largCol, $arr_alinCol, $lin, "ContSubOf1");

        }
        else
        {//se for um segundo contrato
            $contrato = "ID do Contrato: ".$dados->Campo("IDContrato");
            $html.=ImLinCSS(array($contrato), $arr_largCol, $arr_alinCol, $lin, "ContSubOn1");
            $auxCont=$dados->Campo("IDContrato");
            //imprime o primeiro documento do segundo contrato e adiante
            $doc = $dados->Campo("Descricao");
            $html.=ImLinCSS(array($doc), $arr_largCol, $arr_alinCol, $lin, "ContSubOf1");
        }

Solved and Optimized:

$auxCli = ""; //cliente começa sendo nenhum
          $auxCont = ""; //contrato começa sendo nenhum
          while ($dados->LeProxReg())
          {
             if ($auxCli != $dados->Campo("CodCliente")) //Trocou o Cliente
             {
                $cliente = "Código do Cliente: " . $dados->Campo("CodCliente") . " - " . $dados->Campo("Nome");
                if ($dados->Campo("EhPessJuridic") == "S")
                   $cliente .= " - CNPJ" . $dados->Campo("CNPJ");
                else
                   $cliente .= " - CPF" . $dados->Campo("CPF");

                $html .= ImLinCSS(array($cliente), $arr_largCol, $arr_alinCol, $lin, "ContOn1");

                If ($auxCont != $dados->Campo("IDContrato")) //trocou contrato
                   $html .= ImLinCSS(array("ID do Contrato: " . $dados->Campo("IDContrato")), $arr_largCol, $arr_alinCol, $lin, "ContSubOn1");
             }
             $auxCont = $dados->Campo("IDContrato");
             $auxCli = $dados->Campo("CodCliente");
             $html .= ImLinCSS(array($dados->Campo("Descricao")), $arr_largCol, $arr_alinCol, $lin, "ContSubOf1");
          }