PHP paging function code (simple utility)

Prepare data:

Create a new database, test
Execute the following statement (create a new table, test: id, sex, name)

The CREATE TABLE ` test ` (
'id' INT(4) NOT NULL AUTO_INCREMENT PRIMARY KEY,
'sex' INT(1) NOT NULL,
'name' VARCHAR(20) NOT NULL) ENGINE = MYISAM CHARACTER SET utf8 COLLATE utf8_bin;

Add data to the test table, for example:
1 1 jack Bauer
2 0 little red
3 0 small beautiful
4 1 batman
5 1 zhang SAN
6 0 li si
7 0 Wu Xin
< img border = 0 SRC = "http://files.jb51.net/upload/201012/20101202215515104.png" border = 0 >
PHP statement (index.php) :

 
<?php 
//Page Page function
$page = $_GET["page"]; 
function Page($rows,$page_size){ 
global $page,$select_from,$select_limit,$pagenav; 
$page_count = ceil($rows/$page_size); 
if($page <= 1 || $page == '') $page = 1; 
if($page >= $page_count) $page = $page_count; 
$select_limit = $page_size; 
$select_from = ($page - 1) * $page_size.','; 
$pre_page = ($page == 1)? 1 : $page - 1; 
$next_page= ($page == $page_count)? $page_count : $page + 1 ; 
$pagenav .= " The first  $page/$page_count  page   A total of  $rows  records  "; 
$pagenav .= "<a href='?page=1'> Home page </a> "; 
$pagenav .= "<a href='?page=$pre_page'> The previous page </a> "; 
$pagenav .= "<a href='?page=$next_page'> After a page </a> "; 
$pagenav .= "<a href='?page=$page_count'> At the end of the page </a>"; 
$pagenav.=" Jump to the <select name='topage' size='1' onchange='window.location="?page="+this.value'>n"; 
for($i=1;$i<=$page_count;$i++){ 
if($i==$page) $pagenav.="<option value='$i' selected>$i</option>n"; 
else $pagenav.="<option value='$i'>$i</option>n"; 
} 
} //Page Page function
//Use the sample
if (!$conn= mysql_connect("localhost", "root" ,"root")) die(' Database selection failed! '); 
if (!mysql_select_db("test", $conn)) die(' Database selection failed! '); 
mysql_query('set names GBK'); 
//The Page function is used to calculate from which record $select_from will be retrieved and the $pagenav output paging navigation
$rows = mysql_num_rows(mysql_query("select * from test")); 
Page($rows,2); 
$sql = "select * from test limit $select_from $select_limit"; 
$rst = mysql_query($sql); 
while ($row = mysql_fetch_array($rst)){ 
echo "$row[id] - $row[sex] - $row[name] <hr />"; 
} 
echo $pagenav; 
?> 

Browse the index. PHP page, as shown:
< img border = 0 SRC = "http://files.jb51.net/upload/201012/20101202215558135.png" border = 0 >
It's time to say bye!

PHP simple paging functions
Wrote a simple PHP pagination function, database calls are also written inside, with the people can cut!

 
function getask(){ 
$sql = "select * from cms_ask where ansower <> ' ' "; 
//I'm going to change the method here
$q_sq = mysql_query($sql); 
$count = mysql_num_rows($q_sq); 
$page_size = 8; 
$page_current = isset($GLOBALS['page']) ? intval($GLOBALS['page']) : 1; 
$page_count = ceil($count / $page_size); 
$page_start = $page_current - 4; 
$page_end = $page_current + 4; 
if ($page_current < 5) { 
$page_start = 1; 
$page_end = 5; 
} 
if ($page_current > $page_count - 4) { 
$page_start = $page_count - 8; 
$page_end = $page_count; 
} 
if ($page_start < 1) 
$page_start = 1; 
if ($page_end > $page_count) 
$page_end = $page_count; 
$pagebar = ""; 
$sql = "select * from cms_ask where ansower <> ' ' order by id desc limit " . (($page_current - 1) * $page_size) . "," . $page_size; 
$row=$this -> user -> getall("$sql"); 
foreach($row as $v){ 
echo '<dl><dt> Q: '.$v["question"].'</dt><dd> A: '.$v["ansower"].date("Y-m-d H:i:s",$v["postTime"]).'</dd></dl>'; 

} 

$pagebar .= "<div class="page">"; 
$pagebar .= "<ol>"; 
if ($page_current != 1) { 
$pagebar .= '<li><a href="javascript:get_comment(1)" class="sx">FIRST</a></li>'; 
} 
for ($i = $page_start; $i <= $page_end; $i++) { 
if ($i == $page_current) { 
$pagebar .= "<li><span class="sort">" . $i . "</span></li>"; 
} else { 
$pagebar .= "<li><a href='javascript:get_comment(" . $i . ")'>" . $i . "</a></li>"; 
} 
} 

if ($page_current != $page_count) { 
$pagebar .= "<li><a href='javascript:get_comment(" . $page_count . ")' class='sx'>END</a></li>"; 
} 
$pagebar .= "</ol>"; 
$pagebar .= " </div>"; 
echo $pagebar; 
}