Colunas dinamicas

só colocar um IF

if ($item != "") {
 echo"<td>$item</td>";

 echo"<td></td>";
}

So que sumiu todas informações e as celulas continuam aparecendo

for($j=0;$j<$total_detalhes;$j++){
 $this-> verReg($sql_item,$j);
$item = $this->getNome();

if ($item != "") {
echo"<td>$item</td>";

echo"<td></td>";
}

}

e que tenho duas tabelas a de 'titulo de caracteristicas' e 'caracteriscas'

'titulo de caracteristicas'

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'caracteriscas'

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e tenho uma tabela no php que chama essas duas tabela do banco de dados

a primeira deu certo eu chamo assim:

public function mostrarDetalhes($sql_item){

$total_detalhes = $this->totalRegs($sql_item);

 for($j=0;$j<$total_detalhes;$j++){

 $this-> verTitulodeCaracteristicas($sql_item,$j);

$item = $this->getTitulo();

echo"<td>$item</td>";

}

a segunda eu chamo assim:

public function mostrarCaracteristicas($sql_itens){

$total_carac = $this->totalR($sql_itens);

for($j=0;$j<$total_carac;$j++){

$this-> verCaracteriscas($sql_itens,$j);

$col1 = $this->getCol1();

$col2 = $this->getCol2();

$col3 = $this->getCol3();

$col4 = $this->getCol4();

$col5 = $this->getCol5();

$col6 = $this->getCol6();

$col7 = $this->getCol7();

$col8 = $this->getCol8();

$col9 = $this->getCol9();

$col10 = $this->getCol10();

echo"<tr><td>$col1</td>

<td>$col2</td>

<td>$col3</td>

<td>$col4</td>

<td>$col5</td>

<td>$col6</td>

<td>$col7</td>

<td>$col8</td>

<td>$col9</td>

<td>$col10</td>

<td>clique aqui</td></tr>";

}

}

na tabela php eu chamo as funções

desse jeito,

<table cellpadding="0" cellspacing="0" border="1" id="tabela">

 <tr>

<?php

$item_tt->mostrarDetalhes("SELECT titulo FROM titulo_de_caracteristicas WHERE id_grupo ='$id_grupo' ORDER BY ordem");?>

 <td>Orçar</td>

 </tr>

 <?php

$itens_dt->mostrarCaracteristicas("SELECT * FROM caracteristicas WHERE id_grupo ='$id_grupo'");?>

 </table>

aparece assim todos com id_grupo=1

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se na função eu consegui fazer contar quantos 'titulo de caracteristicas' com id_grupo = 1 e der o comando para so contar ate chegar o 4 <td></td>, ai nao apareceria as colunas. Eu vi isso porem não consegui fazer o script

Eu gostaria que aparece-se assim:

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echo "<tr>";

if ($col1) echo "<td>$col1</td>";

if ($col2) echo "<td>$col2</td>";

if ($col3) echo "<td>$col3</td>";

if ($col4) echo "<td>$col4</td>";

if ($col5) echo "<td>$col5</td>";

if ($col6) echo "<td>$col6</td>";

if ($col7) echo "<td>$col7</td>";

if ($col8) echo "<td>$col8</td>";

if ($col9) echo "<td>$col9</td>";

if ($col10) echo "<td>$col10</td>";

 

echo "<td>clique aqui</td></tr>";