<?php

$picList = array();
for ($i = 0; $i < 200; $i++)
    $picList[] = "pic$i.jpg";

$c = 1;
$div1 = 30;
$div2 = 6;

$l = array();
$tmpl1 = array();
$tmpl2 = array();

foreach ( $picList as $p ) {
    $tmpl2[] = $p;
    if ( !( $c % $div2 ) ) {
        $tmpl1[] = $tmpl2;
        $tmpl2 = array();
    }
    if ( !( $c % $div1 ) ) {
        $l[] = $tmpl1;
        $tmpl1 = array();
    }
    $c++;
}

echo "<ul>";
foreach ( $l as $tbl ) {
      echo "<hr />";
      echo "<li>";
      echo "<table border=\"1\">";
      foreach( $tbl as $tr ) {
          echo "<tr>";
          foreach( $tr as $td ) {
              echo "<td>$td</td>";
          }
          echo "</tr>";
      }
      echo "</table>";
      echo "</li>";
}
echo "</ul>";