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<?
#
# paging.php
# ÆäÀÌ¡ Å×½ºÆ® ÆÄÀÏ
#

$connect = mysql_connect ( "localhost", "¾ÆÀ̵ð", "Æнº¿öµå" ) or die ("DB¿¡ ¿¬°áÇÒ ¼ö ¾ø½À´Ï´Ù.");
$status = mysql_select_db("DB¸í", $connect) or die ("DB »ç¿ë ½ÇÆÐ : ".mysql_error($connect));

// ÆäÀÌÁö ¼³Á¤
$page_set = 10; // ÇÑÆäÀÌÁö ÁÙ¼ö
$block_set = 5; // ÇÑÆäÀÌÁö ºí·°¼ö

$query = "SELECT count(no) as total FROM board";
$result = mysql_query($query, $connect) or die ("Äõ¸® ¿¡·¯ : ".mysql_error($connect));
$row = mysql_fetch_array($result);

$total = $row[total]; // Àüü±Û¼ö

$total_page = ceil ($total / $page_set); // ÃÑÆäÀÌÁö¼ö(¿Ã¸²ÇÔ¼ö)
$total_block = ceil ($total_page / $block_set); // ÃÑºí·°¼ö(¿Ã¸²ÇÔ¼ö)

if (!$page) $page = 1; // ÇöÀçÆäÀÌÁö(³Ñ¾î¿Â°ª)
$block = ceil ($page / $block_set); // ÇöÀçºí·°(¿Ã¸²ÇÔ¼ö)

$limit_idx = ($page - 1) * $page_set; // limit½ÃÀÛÀ§Ä¡

// ÇöÀçÆäÀÌÁö Äõ¸®
$query = "SELECT no FROM board ORDER BY no DESC LIMIT $limit_idx, $page_set";
$result = mysql_query($query, $connect) or die ("Äõ¸® ¿¡·¯ : ".mysql_error($connect));
$rows = mysql_num_rows($result);

// ¸®½ºÆ® »Ñ¸®±â
echo "<pre>";
while ($row = mysql_fetch_array($result)) {
echo $row[no]."\n";
}
echo "</pre>";

// ÆäÀÌÁö¹øÈ£ & ºí·° ¼³Á¤
$first_page = (($block - 1) * $block_set) + 1; // ù¹ø° ÆäÀÌÁö¹øÈ£
$last_page = min ($total_page, $block * $block_set); // ¸¶Áö¸· ÆäÀÌÁö¹øÈ£

$prev_page = $page - 1; // ÀÌÀüÆäÀÌÁö
$next_page = $page + 1; // ´ÙÀ½ÆäÀÌÁö

$prev_block = $block - 1; // ÀÌÀüºí·°
$next_block = $block + 1; // ´ÙÀ½ºí·°

// ÀÌÀüºí·°À» ºí·°ÀÇ ¸¶Áö¸·À¸·Î ÇÏ·Á¸é...
$prev_block_page = $prev_block * $block_set; // ÀÌÀüºí·° ÆäÀÌÁö¹øÈ£
// ÀÌÀüºí·°À» ºí·°ÀÇ Ã¹ÆäÀÌÁö·Î ÇÏ·Á¸é...
//$prev_block_page = $prev_block * $block_set - ($block_set - 1);
$next_block_page = $next_block * $block_set - ($block_set - 1); // ´ÙÀ½ºí·° ÆäÀÌÁö¹øÈ£

// ÆäÀÌ¡ È­¸é
echo ($prev_page > 0) ? "<a href='$PHP_SELF?page=$prev_page'>[prev]</a> " : "[prev] ";
echo ($prev_block > 0) ? "<a href='$PHP_SELF?page=$prev_block_page'>...</a> " : "... ";

for ($i=$first_page; $i<=$last_page; $i++) {
echo ($i != $page) ? "<a href='$PHP_SELF?page=$i'>$i</a> " : "<b>$i</b> ";
}

echo ($next_block <= $total_block) ? "<a href='$PHP_SELF?page=$next_block_page'>...</a> " : "... ";
echo ($next_page <= $total_page) ? "<a href='$PHP_SELF?page=$next_page'>[next]</a>" : "[next]";

?>
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