swipeales swipeales - 7 months ago 30
SQL Question

pagination works but it doesn't go to next page

i have added pagination on my site, everything is fine but whenever i click next it will go to same page url/dataload2.php?page=0. This is my php code, i think it is something wrong in calculations or looping, thank you for any help.

EDIT: some more code added

<?php

include 'conn.php';
$num_rec_per_page=2;

if (isset($_GET["page"])) { $page = $_GET["page"]; } else { $page=1; };
$start_from = ($page-1) * $num_rec_per_page;

$sql = "SELECT * from crewlist ORDER BY name ASC LIMIT $start_from, $num_rec_per_page";

$result = $conn->query($sql);

?>


and

<?php
$sql = "SELECT * FROM crewlist";
$rs_result = mysql_query($sql); //run the query
$total_records = mysql_num_rows($rs_result); //count number of records
$total_pages = ceil($total_records / $num_rec_per_page);

echo "<a href='dataload2.php?page=1'>".'|<'."</a> "; // Goto 1st page

for ($i=1; $i<=$total_pages; $i++) {
echo "<a href='dataload2.php?page=".$i."'>".$i."</a> ";
};
echo "<a href='dataload2.php?page=$total_pages'>".'>|'."</a> "; // Goto last page
?>


EDIT: update syntax

<?php
$sql = "SELECT * FROM crewlist";
$rs_result = mysqli_query($sql); //run the query
$total_records = mysqli_num_rows($rs_result); //count number of records
$total_pages = ceil($total_records / $num_rec_per_page);

echo "<a href='dataload2.php?page=1'>".'|<'."</a> "; // Goto 1st page

for ($i=1; $i<=$total_pages; $i++) {
echo "<a href='dataload2.php?page=".$i."'>".$i."</a> ";
};
?>
<?php
echo "<a href='dataload2.php?page=$total_pages'>".'>|'."</a> "; // Goto last page
?>

Answer

As per your edit:

$rs_result = mysqli_query($sql);
  • mysqli_query() requires a db connection be passed as the first parameter

Change your code to read as:

$rs_result = mysqli_query($conn, $sql);

and you'll be good to go.

Reference:

Plus, do read up on prepared statements, or PDO with prepared statements as you could get hit by an SQL injection.

  • Best to be on the safe side ;-)

Additional references:

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