Con este código consigues lo que quieres, adaptalo a tus necesidades.
Código PHP:
<?php
$texto=" sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd
sadfds dsafsdfda dsaf adsaf asfdsf afsd fsad asfaf asdfadsfdfaf adsf f asdf a f adfadsfd444";
$texto = explode(" ",$texto); //cuentas las plabras que tiene el texto
$columna=intval(count($texto)/3); //lo divides en 3 (por ser 3 columnas) y obtienes un numero entero.
?>
<table border='1'>
<tr>
<td>
<?php
for($i=0;$i<=$columna;$i++)
{
echo $texto[$i];
$fin=$i;
}
?>
</td>
<td>
<?php
for($i=$fin+1;$i<=($columna*2);$i++)
{
echo $texto[$i];
$fin=$i;
}
?>
</td>
<td>
<?php
for($i=$fin+1;$i<=($columna*3)+1;$i++)
{
echo $texto[$i];
}
?>
</td>
</tr>
</table>
