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? ??? ?? PHP ???? ??? ??? ??? ?? PHP ? MySQL? ???? ??? ??? ???? ??? ??????

??? ??? ??? ?? PHP ? MySQL? ???? ??? ??? ???? ??? ??????

Nov 03, 2024 pm 11:58 PM

How to Implement Pagination with PHP and MySQL for Large Datasets?

PHP ? MySQL? ??? ??? ??

??? ??? ??? ??? ???? ??? ? ??????? ???? ? ???? ?????. ? ????? ???? ??? ?? ??? ??? ? ??? PHP ? MySQL? ???? ??? ??? ???? ??? ?????.

?????, ??? PHP ??? ?? ??? 'user_id'? ???? 'redirect'?? ???.

?? ??

??? ??? ????? ?? PHP ????? ??? ? ????.

<code class="php"><?php

// MySQL connection code (not shown for brevity)

// Set pagination parameters
$perPage = 10;
$page = (isset($_GET['page'])) ? (int)$_GET['page'] : 1;
$startAt = $perPage * ($page - 1);

// Get total number of records
$query = "SELECT COUNT(*) as total FROM redirect WHERE user_id = '".$_SESSION['user_id']."'";
$r = mysql_fetch_assoc(mysql_query($query));

// Calculate total pages
$totalPages = ceil($r['total'] / $perPage);

// Generate pagination links
$links = "";
for ($i = 1; $i <= $totalPages; $i++) {
  $links .= ($i != $page )
            ? "<a href='index.php?page=$i'>Page $i</a> "
            : "$page ";
}


// Execute paginated query
$query = "SELECT * FROM 'redirect' WHERE 'user_id'= \''.$_SESSION['user_id'].' \' ORDER BY 'timestamp' LIMIT $startAt, $perPage";
$r = mysql_query($query);

// Display results and pagination links
// ...

echo $links; // display pagination links
?></code>

??

  • $perPage? ???? ??? ??? ?? ?????.
  • $page? ?? ???? ???? ?????.
  • $startAt? ?? ???? ?? ???? ?? ???? ?????.
  • COUNT(*) ??? ? ??? ?? ???? ??? ??? ?? ?????.
  • $links? ???? ??? ?? ??? ???? ?? ???? ?? ?????.
  • ????? ??? ?? MySQL ??? ???? $startAt? ??? ????? $perPage? ???? ? ?? ?????.

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