mysql pagination error after following a tutorial - php

Question

Im looking to add a simple pagination, but after changing from msql to mysqli i cant seem to get it right. I cant get my head around it yet, im just starting with it.
I followed the tutorial but still im getting errors.
sorry for my lack of knowledge but what am i missing?
<?php
$db = new mysqli("host", "username", "password", "mydatabase");
if($db->connect_errno > 0){
die('Unable to connect to database [' . $db->connect_error . ']');
}
$rec_limit = 10;
$sql = "SELECT COUNT(photo)FROM employees";
$retval = mysql_query( $sql, $db );
if(! $retval )
{
die('Could not get data: ' . mysql_error());
}
$row = mysql_fetch_array($retval, MYSQL_NUM );
$rec_count = $row[0];
if( isset($_GET{'page'} ) )
{
$page = $_GET{'page'} + 1;
$offset = $rec_limit * $page ;
}
else
{
$page = 0;
$offset = 0;
}
$left_rec = $rec_count - ($page * $rec_limit);
$sql = "SELECT photo, link".
"FROM employees ".
"LIMIT $offset, $rec_limit";
$retval = mysql_query( $sql, $db );
if(! $retval )
{
die('Could not get data: ' . mysql_error());
}
while($row = mysql_fetch_array($retval, MYSQL_ASSOC))
echo "<br /><br />";
echo '','<img src="/upload/' . $row->photo . '" border=0>';
echo '', $row->link;
if( $page > 0 )
{
$last = $page - 2;
echo "Last 10 Records |";
echo "Next 10 Records";
}
else if( $page == 0 )
{
echo "Next 10 Records";
}
else if( $left_rec < $rec_limit )
{
$last = $page - 2;
echo "Last 10 Records";
}
mysql_close($db);
?>

Answer 1

You are mixing mysqli_* and mysql_* functions.
Please choose which style you are going to use: the procedural style (mysqli_connect, mysqli_query) or the object style (new MySQLi, ect.)
You can't mix those 2 and you can't also mix 2 different libraries (mysql and mysqli)
Read more about the different styles on PHP.net (the examples also show how to use mysqli)

Answer 2

$sql = "SELECT COUNT(photo)FROM employees";
^--- missing a space here
and
$sql = "SELECT photo, link".
^--- missing space here
"FROM employees ".
if this code is from a tutorial, I suggest you ditch it. Your code has absolutely not error handling, and simply assumes everything succeeded. A properly written tutorial would have proper error detection/handling. And also suggest NOT musing the mysql_*() functions, as they're deprecated/obsolete.