PHP MySQL Paging function

+-----------------------------------------------------------------------
| File Summary: Pagination display function
| File name: page.php
| Date Created: 2010-5-20
+-----------------------------------------------------------------------
*/
function _pageft ($totle, $displaypg = $url = ') {

Global $page, $firstcount, $pagenav, $_server;

$globals ["displaypg"] = $DISPLAYPG;

if (! $page)
$page = 1;
if (! $url) {
$url = $_server["Request_uri"];
}

  //url Analysis:
   $parse _url = Parse_url ($url);
   $url _query = $parse _url["Query "]; Query string
  if ($url _query) {
    $url _query = Preg_replace ("/(^|&) page=$" for individual removal of URLs page/"," ", $url _query);
    $url = str_replace ($parse _url["Query"), $url _query, $url);
   if ($url _query)
     $url. = "&page";
   else
     $url. = "page";
  } else {
    $url. = "? page";
  }
   $lastpg = ceil ($totle /$DISPLAYPG); Last page, is also the total number of pages
   $page = min ($lastpg, $page);
   $PREPG = $page-1;//prev
  $ NEXTPG = ($page = = $LASTPG 0: $page + 1); Next page
   $firstcount = ($page-1) * $DISPLAYPG;

To start the pager bar code:
$pagenav = "Show <b>". ($totle? ($firstcount + 1): 0). "</b>-<b>". Min ($firstcount + $DISPLAYPG, $totle). "</b> Records &nbsp;&nbsp; total <font color= ' red ' > $totle </font> message";

If only one page jumps out of the function:
if ($LASTPG <= 1)
return false;

$pagenav. = "<a href= ' $url =1 ' > Home </a>";
if ($PREPG)
$pagenav. = "<a href= ' $url = $prepg ' > front page </a>";
Else
$pagenav. = "front page";
if ($NEXTPG)
$pagenav. = "<a href= ' $url = $nextpg ' > Back page </a>";
Else
$pagenav. = "Back Page";
$pagenav. = "<a href= ' $url = $lastpg ' > Last </a>";

Drop-down Jump List, looping through all page numbers:
$pagenav. = "to <select class= ' border:1px solid #98ccfa; ' name= ' topage ' size= ' 1 ' onchange= ' window.location= ' $url =" + This.value ' >n ';
for ($i = 1; $i <= $lastpg; $i + +) {
if ($i = = $page)
$pagenav. = "<option value= ' $i ' selected> $i </option>n";
Else
$pagenav. = "<option value= ' $i ' > $i </option>n";
}
$pagenav. = "</select> page &nbsp;&nbsp;&nbsp; total <font color= ' red ' > $lastpg </font> page";
}
?>