use foreach on echo code example

Example 1: echo foreach

$array = array();
     $result = mysql_query("SHOW TABLES FROM `st_db_1`");
     while($row = mysql_fetch_row($result) ){
     $result_tb = mysql_query("SELECT id FROM $row[0] LIMIT 1");
     $row_tb=mysql_fetch_array($result_tb);
     $array[] = $row[0];
     $array2[] = $row_tb[0];
     //checking for availbility of result_tb
     /*   if (!$result_tb) {
                  echo "DB Error, could not list tablesn";
                  echo 'MySQL Error: ' . mysql_error();
                  exit;
                  }  */
     }
     natsort($array);
     natsort($array2);

    foreach ($array as $item[0]  ) {
    echo "<a href=show_cls_db.php?id= foreach ($array2 as $item2[0]){echo \"$item2[0]\"}>{$item[0]}<br/><a/>" ;
    }

Example 2: echo foreach

foreach ($array as $element) {
    echo "<a href='show_cls_db.php?id=" . implode('', $array2) . "'>{$element}</a><br/>";
}