Mi lehet a hiba?

Kiprobaltam egy php leptetot, rendesen mukodik, de ezt irja ki az elso sorban:

Strict Standards: Only variables should be passed by reference in C:\xampp\htdocs\lista.php on line 16

Mi lehet a hiba?

Forraskod:

<?php

$hostname='localhost';

$user='root';

$pass='';

$dbase='valami';

$connection = mysql_connect("$hostname" , "$user" , "$pass")

or die ("Can't connect to MySQL");

$db = mysql_select_db($dbase , $connection) or die ("Can't select database.");

mysql_query( "SET NAMES utf8");

$limit = 25;

$sql = "select count(id) from teszt";

$c = array_shift(mysql_fetch_row(mysql_query($sql)));

$maxpage = ceil($c / $limit);

$page = isset($_GET['page']) ? abs((int)$_GET['page']) : 1;

if ($page <= 0)

{

$page = 1;

}

else if ($page >= $maxpage)

{

$page = $maxpage;

}

$offset = ($page-1) * $limit;

$query = mysql_query("select * from teszt limit $offset, $limit ");

while ($row = mysql_fetch_assoc($query))

{

print $row['elem']."<br />";

}

//lapozó linkek

$linklimit = 10;

$linklimit2 = $linklimit / 2;

$linkoffset = ($page > $linklimit2) ? $page - $linklimit / 2 : 0;

$linkend = $linkoffset+$linklimit;

if ($maxpage - $linklimit2 < $page)

{

$linkoffset = $maxpage - $linklimit;

if ($linkoffset < 0)

{

$linkoffset = 0;

}

$linkend = $maxpage;

}

if ($page > 1)

{

print "<a href='?page=".($page-1)."'>Előző</a> ";

}

for ($i=1+$linkoffset; $i <= $linkend and $i <= $maxpage; $i++)

{

$style = ($i == $page) ? "color: black;" : "color: blue;";

print "<a href='?page=$i' style='$style'>[$i. oldal]</a> ";

}

if ($page < $maxpage)

{

print "<a href='?page=".($page+1)."'>Következő</a>";

}

?>