Page numbering automatically adapts to a range of paging codes

Effect Chart:

Remember before I saw a page number way of paging effect, the number of pages more folding lines continue to show up to more than 60 pages, hehe! A little influence beautiful!

So I wrote a page-numbering program that automatically adapts to the range.
In other words, the page number format follows
<< < 1 2 3 45 6 7 > >>
<< < 6 7 8 9> >>
Underline is the current page, so you can display a similar page number, to avoid too long affect the appearance of
Code added a note, mainly novice to see, oh, write this function, did not consider the separation of performance structure, the master will not be prosecuted! copy content to clipboard

Code:

<?php
Function page ($page, $total, $phpfile, $pagesize =10, $pagelen =7) {
$pagecode = ';//define variable to hold page-generated HTML
$page = Intval ($page);//Avoid Non-numeric page numbers
$total = Intval ($total);//Guaranteed Total record value type is correct
if (! $total) return array ();//The total number of records is zero returns an empty array
$pages = Ceil ($total/$pagesize);//Calculate Total page
Handling Page number legality
if ($page <1) $page = 1;
if ($page > $pages) $page = $pages;
Calculate query Offsets
$offset = $pagesize * ($page-1);
Page range Calculation
$init = 1;//starting page number
$max = $pages;//End page number
$pagelen = ($pagelen%2)? $pagelen: $pagelen +1;//page number
$pageoffset = ($pagelen-1)/2;//the left and right offset of page number

Generate HTML
$pagecode = ' <div class= ' page ' > ';
$pagecode. = "<span> $page/$pages </span>";//The first few pages, altogether several pages
If this is the first page, the connection to the first and previous pages is not displayed
if ($page!=1) {
$pagecode. = "<a href=\" {$phpfile}?page=1\ "><<</a>";//The first page
$pagecode. = "<a href=\" {$phpfile}?page=. ($page-1). " \ ><</a>/Previous page
}
Can be offset when the number of pages is greater than page numbers
if ($pages > $pagelen) {
If the current page is less than or equal to the left offset
if ($page <= $pageoffset) {
$init = 1;
$max = $pagelen;
}else{//If the current page is greater than the left offset
If the current page number right offset exceeds the maximum page count
if ($page + $pageoffset >= $pages + 1) {
$init = $pages-$pagelen +1;
}else{
Computation of the left and right offsets when they exist
$init = $page-$pageoffset;
$max = $page + $pageoffset;
}
}
}
Generate HTML
for ($i = $init; $i <= $max; $i + +) {
if ($i = = $page) {
$pagecode. = ' <span> '. $i. ' </span> ';
} else {
$pagecode. = "<a href=\" {$phpfile}?page={$i}\ "> $i </a>";
}
}
if ($page!= $pages) {
$pagecode. = "<a href=\" {$phpfile}?page=. ($page + 1). " \ ">></a>";//Next page
$pagecode. = "<a href=\" {$phpfile}?page={$pages}\ ">>></a>";//Last Page
}
$pagecode. = ' </div> ';
Return Array (' Pagecode ' => $pagecode, ' sqllimit ' => ' limit '. $offset ', '. $pagesize);
}
?>Function arguments:
$page the page number obtained by the current $_get
Total number of $total records
$phpfile page number Connection file name
$pagesize don't have to explain, huh?
$pagelen display a maximum of several page numbers notice (odd number), symmetry!
function to return an array:
The corresponding content of the Pagecode index is the generated HTML code
The Sqllimit index corresponds to the SQL limit suffix

How to use: copy content to clipboard

Code:

<?php
$phpfile = 'index.php';
$page= isset($_GET['page'])?$_GET['page']:1;
$db = new Mysql();
$counts = $db->counts('select `id` from `test`');
$sql='select `id`,`title` from `test`';
$getpageinfo = page($page,$counts,$phpfile);
$sql.=$getpageinfo['sqllimit'];
$data = $db->getRows($sql);
?>
<?php
echo $getpageinfo['pagecode'];//显示分页的html代码
?>Subsidized CSS copy content to clipboard

Code:

<style type="text/css">
body{font-family:Tahoma;}
.page{padding:2px;font-weight:bolder;font-size:12px;}
.page a{border:1px solid #ccc;padding:0 5px 0 5px;margin:2px;text-decoration:none;color:#333;}
.page span{padding:0 5px 0 5px;margin:2px;background:#09f;color:#fff;border:1px solid #09c;}
</style> 以下是HTML网页特效代码，点击运行按钮可查看效果：
[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]