PHP Paging function code sharing

See http://qxblog.sinaapp.com/?p=100 $count is the total number of entries, $page the current page number, $page _size the number of entries per page function Show_page ($count, $page, $page _size) { $page _count = ceil ($count/$page _size); Calculate the total number of pages $init = 1; $page _len=7; $max _p= $page _count; $pages = $page _count; Judging the current page number $page = (Empty ($page) | | $page <0)? 1: $page; Gets the current page URL $url = $_server[' Request_uri '); Remove the original page parameter from the URL to add a new page parameter $parsedurl =parse_url ($url); $url _query = isset ($parsedurl [' query '])? $parsedurl [' query ']: '; if ($url _query! = ") { $url _query = Preg_replace ("/(^|&) page= $page/", "", $url _query); $url = Str_replace ($parsedurl [' query '], $url _query, $url); if ($url _query! = ") { $url. = ' & '; } } else { $url. = '? '; } Paging function code $page _len = ($page _len%2)? $page _len: $page _len+1; Number of page number $pageoffset = ($page _len-1)/2; Left and right offset of page number $navs = "; if ($pages! = 0) { if ($page!=1) { $navs. = "Home";//First page $navs. = "Previous page";//Previous Page } else { $navs. = " home "; $navs. = " previous page "; } if ($pages > $page _len) { If the current page is less than or equal to the left offset if ($page <= $pageoffset) { $init = 1; $max _p = $page _len; } else//If the current page is greater than the left offset { If the right offset of the current page number exceeds the Max page count if ($page + $pageoffset >= $pages + 1) { $init = $pages-$page _len+1; } Else { Calculations when left and right offsets are present $init = $page-$pageoffset; $max _p = $page + $pageoffset; } } } for ($i = $init; $i <= $max _p; $i + +) { if ($i = = $page) {$navs. = "". $i. ';} else {$navs. = "". $i. "";} } if ($page! = $pages) { $navs. = "Next page";//Next page $navs. = "Last";//Last Page } else { $navs. = " next page "; $navs. = " last "; } echo "$navs"; } } Copy Code

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