在两列表中连续显示php嵌套数组结果

我有一个嵌套数组，将其他三个数组分组：$online、$busy和$offline，以便按此顺序显示结果。

$conteudo = array($online, $ocupado, $offline);

所需的结果将是一个两列的表格，以连续流显示结果，如下所示：

online1 | online2
online3 | busy1
busy2   | offline1
offline2| offline3
offline4|

我已经尝试了很多foreach循环，并尝试更改html标签，但最接近预期结果的是：

<table width='100%' cellpadding='5' border="1">
<?php
$i = 1; //contador de colunas
$max_colunas = 2; // numero de colunas
foreach ($conteudo as $row) {
    echo "<tr>";
    foreach ($row as $col) {
        foreach ($col as $cell) {
            if ($i == 1) {
                echo "<td>" . $cell . "</td>";
            } elseif ($i == $max_colunas){
                echo "<td>" . $cell . "</td></tr>";
                $i = 0;
            } else {
                echo "<td>" . $cell . "</td>";
            }
            $i++;
        }
    }   
    echo "</tr>"; 
}   

此代码将输出如下表：

 onine1  | online2 |online3
 busy1   | busy2   |
 offline1|offline2 |offline3|offline4

我不知道为什么它完全忽略$max_colunas，似乎它将数组中的所有元素打印成一行。

如果我删除行：

 echo "<tr>";
 echo "</tr>";

从foreach的开始和结束，它将像这样一行输出所有内容：

onine1  | online2 |online3 | busy1 | busy2 |offline1|offline2 |offline3|offline4

任何获得所需输出格式的建议都将不胜感激。

编辑日期：17/01:

这就是我获取阵列的方式：

//group people
$online = array(); //group online
$ocupado = array(); //group ocupado
$offline = array(); //group offline
//select people to group
$atendentes = mysql_query("SELECT nome FROM atendentes ORDER BY nome") or die(mysql_error());
$atendentedb = array();
//put selected people in array
while ($row = mysql_fetch_assoc($atendentes)) {
    $atendentedb[] = array('nome' => $row["nome"], 'online' => false);
}

//take people online now and check in selected people
$names = modWhosonlineCustom::getOnlineUserNames();
foreach ($names as $name):
    //foreach ($atendentedb as $atendente):
    for($i = 0; $i < count($atendentedb); $i++):
        $att = strtolower($name->username);
        if ($atendentedb[$i]['nome'] == $att):          
            $atendentedb[$i]['online'] = true;
            break;
        endif;
   endfor;
endforeach;
//check each selected people
foreach ($atendentedb as $atendente) :
    //save temporary data
    $online_ = $atendente['online'];
    $nome_   = $atendente['nome'];  
    //if selected people online
    if ($online_) :
        //take status to show
        $status = mysql_query("SELECT status FROM atendentes WHERE nome = '$nome_' LIMIT 1") or die(mysql_error());
        while ($row = mysql_fetch_assoc($status)):
            $statusdb = $row["status"];
        endwhile;
        //verify and save deppending on status
        switch ($statusdb):
            //if online
            case "disponivel":
                $descricao = mysql_query("SELECT hp_online FROM atendentes WHERE nome = '$nome_' LIMIT 1") or die(mysql_error());
                while ($row = mysql_fetch_assoc($descricao)):
                $online[] = array('info'=>$row['hp_online']);
                endwhile;
                break;
        //if busy
            case "ocupado":
                $descricao = mysql_query("SELECT hp_busy FROM atendentes WHERE nome = '$nome_'  LIMIT 1") or die(mysql_error());
                while ($row = mysql_fetch_assoc($descricao)):
                    $ocupado[] = array('info'=>$row['hp_busy']);
                endwhile;
                break;
        endswitch;
    //if offline
    else:
        $descricao = mysql_query("SELECT hp_offline, horario FROM atendentes WHERE nome = '$nome_' LIMIT 1") or die(mysql_error());
        while ($row = mysql_fetch_assoc($descricao)):
           $offline[] = array('info'=>$row['hp_offline'], 'horario'=>$row['horario']);
        endwhile;
    endif;
endforeach;

已编辑

因此，在遵循了DaveRandom的帮助说明后，我得到了这段代码，这与正确的格式相差甚远，除了来自数组$offline的结果的"神秘"行为之外，其他数组都在"块"中显示（一行中的所有单元格或一列中的所有单元），而其他数组则完美地显示（？？）。

   //group people
   $online = $ocupado = $offline = array();
   //select people to group
   $query = "SELECT nome, status, hp_online, hp_busy, hp_offline, horario
      FROM atendentes
      ORDER BY nome";
  $atendentes = mysql_query($query) or die(mysql_error());
  $atendentedb = array();
  // put selected people in array
  while ($row = mysql_fetch_assoc($atendentes)) {
  $atendentedb[strtolower($row['nome'])] = array_merge($row, array('online' => FALSE));
  }
  //take people online now and check in selected people
  $names = modWhosonlineCustom::getOnlineUserNames();
  foreach ($names as $name) {
  $uname = strtolower($name->username);
  if (isset($atendentedb[$uname])) $atendentedb[$uname]['online'] = TRUE;
  }
  //check each selected people
  foreach ($atendentedb as $name => $atendente) {
  //if selected people online
  if ($atendente['online']) {
 //verify and save deppending on status
 switch ($atendente['status']) {
  //if online
  case 'disponivel':
    $atendentedb[$name]['info'] = $online[] = $atendente['hp_online'];
    break;
  //if busy
  case 'ocupado':
    $atendentedb[$name]['info'] = $ocupado[] = $atendente['hp_busy'];
    break;
  }
  //if offline
  } else {
  $atendentedb[$name]['info'] = $offline[] = $atendente['hp_offline'];
$atendentedb[$name]['info'] = $offline[] = $atendente['horario'];
  }
}
  //*******Display Results
  $conteudo = array_merge($online, $ocupado, $offline);
  $max_colunas = 2; // numero de colunas
  // Start the table
  echo '<table width="100%" cellpadding="5" border="1">'."'n";
  // Loop all the objects
  for ($i = 0, $j = 0; isset($conteudo[$i]); $i++) {
  if ($j == 0) {
  // Output the beginning of a row
  echo "  <tr>'n";
  }
  // Always output a data cell
  echo "    <td>$conteudo[$i]</td>'n";
  if (++$j >= $max_colunas) {
  // Output the end of a row and reset the cell counter
  echo "  </tr>'n";
  $j = 0;
  }
  }
  if ($j) {
  // We may end up with an incomplete row at the end, so pad it with empty cells
  // and close the row
  while ($j++ < $max_colunas) {
 echo "    <td></td>'n";
 }
 echo "  </tr>'n";
 }
 // Close the table
 echo "</table>";