php search from mysql database showing only one page - php

Question

The following script is showing only first page and link to next page is there but is not leading anywhere. Can someone help me?
$var = #$_GET['q'] ;
$trimmed = trim($var);
$limit = 10;
if ($trimmed == "")
{
echo "<p>What are you looking for?...</p>";
exit;
}
if (!isset($var))
{
echo "<p>We dont seem to have a search parameter!</p>";
exit;
}
mysql_connect('xxx', 'yyy', 'zzz');
mysql_select_db('yyy') or die('Unable to select database');
$query = "select * from table where NAME like '%$trimmed%' order by NAME";
$numresults = mysql_query($query);
$numrows = mysql_num_rows($numresults);
if ($numrows == 0)
{
echo "<h4>Results</h4>";
echo "<p>Sorry, your search: "" . $trimmed . "" returned zero results</p>";
echo "<p><a href=\"http://www.google.com/search?q="
. $trimmed . "\" target=\"_blank\" title=\"Look up
" . $trimmed . " on Google\">Click here</a> to try the search on google</p>";
}
if (empty($s))
{
$s = 0;
}
$query .= " limit $s,$limit";
$result = mysql_query($query) or die("Couldn't execute query");
echo "<p>You searched for: "" . $var . ""</p>";
echo "Results";
$count = 1 + $s;
while ($row= mysql_fetch_array($result))
{
$title = $row["NAME"];
echo "$count.- $title" ;
$count++ ;
}
$currPage = (($s/$limit) + 1);
echo "<br />";
if ($s >= 1)
{
// bypass PREV link if s is 0
$prevs = ($s - $limit);
print " <a href=\"$PHP_SELF?s=$prevs&q=$var\"><<
Prev 10</a> ";
}
$pages = intval($numrows/$limit);
if ($numrows % $limit)
{
$pages++;
}
if (!((($s+$limit)/$limit) == $pages) && $pages != 1)
{
$news = $s + $limit;
print "Next 10 >>";
}
$a = $s + ($limit);
if ($a > $numrows)
{
$a = $numrows;
}
$b = $s + 1;
echo "<p>Showing results $b to $a of $numrows</p>";

Answer 1

In your code, $s gets reset every time the page is reloaded or the next page link is clicked. You should have $s = $_REQUEST['s'] at the beginning of your code.

Answer 2

PHP_SELF is a $_SERVER variable. Regardless, you should use $_SERVER['SCRIPT_NAME'] here.
echo "Next 10 >>";
Among a few notable improvements, you should really look into sanitizing the variables you put in the querystring with urlencode() as well.