【www.gdgbn.com--mysql教程】

php教程
/*
 * 模板分页类,源于easp教程的数据库教程分页方法，算是easp分页的的php独立版
 * 支持动态和静态分页方式
 * * page([总记录数=1]，[分页大小=20]，[当前页=1]，[显示页数=6]，[分页参数="page"],[分页链接=当前页面],[是否静态=false])
 * 动态：
 * 简单用法：
 * $page = new page(50);
 * $page->setpager("zjj","共有{recordcount} 个商品  当前第 {pageindex} 页 / 共 {pagecount} 页 分页： {first}{prev}  {list}  {next}{last}  转到 {jump} 页",array("listlong"=>"6","first"=>"首页","last"=>"尾页","prev"=>"上一页","next"=>"下一页","list"=>"第*页","jump"=>"select"));
 * echo $page->getpager("zjj");
 * 全参数用法：
 * $page = new page(50,20,1,6,"page","prrr.php",false);
 * $page->setpager("zjj","共有{recordcount} 个商品  当前第 {pageindex} 页 / 共 {pagecount} 页 分页： {first}{prev}  {list}  {next}{last}  转到 {jump} 页",array("listlong"=>"6","first"=>"首页","last"=>"尾页","prev"=>"上一页","next"=>"下一页","list"=>"第*页","jump"=>"select"));
 * echo $page->getpager("zjj");
 * 静态：
 * $page = new page(50,20,1,6,"page","prrr{page}.html",true);
 * $page->setpager("zjj","共有{recordcount} 个商品  当前第 {pageindex} 页 / 共 {pagecount} 页 分页： {first}{prev}  {list}  {next}{last}  转到 {jump} 页",array("listlong"=>"6","first"=>"首页","last"=>"尾页","prev"=>"上一页","next"=>"下一页","list"=>"第*页","jump"=>"select"));
 * echo $page->getpager("zjj");
 */
class page {
 private $page_size; //每页显示的条目数
 private $total_size; //总条目数
 private $current_page; //当前被选中的页
 private $sub_pages; //每次显示的页数
 private $total_pages; //总页数
 private $page_tpl = array (); // 分页模板
 private $pageparam;
 private $pagelink;
 private $static;
 
 function __construct($total_size = 1, $page_size = 20, $current_page = 1, $sub_pages = 6, $pageparam = "page", $pagelink = "", $static = false) {
  $this->page_size = intval ( $page_size );
  $this->total_size = intval ( $total_size );
  if (! $current_page) {
   $this->current_page = 1;
  } else {
   $this->current_page = intval ( $current_page );
  }
  $this->total_pages = ceil ( $total_size / $page_size );
  $this->sub_pages = intval ( $sub_pages );
  $this->pageparam = $pageparam;
  $this->pagelink = (empty ( $pagelink ) ? $_server ["php_self"] : $pagelink);
  $this->static = $static;
  $this->page_tpl ["default"] = array ("tpl" => "{first}{prev}{liststart}{list}{listend}{next}{last} 跳转到{jump}页", "config" => array () );
 
 }
 public function __set($param, $value) {
  $this->$param = $value;
 }
 public function __get($param) {
  return $this->$param;
 }
 /*
  __destruct析构函数，当类不在使用的时候调用，该函数用来释放资源。
 */
 function __destruct() {
  unset ( $page_size ); //每页显示的条目数
  unset ( $total_size ); //总条目数
  unset ( $current_page ); //当前被选中的页
  unset ( $sub_pages ); //每次显示的页数
  unset ( $total_pages ); //总页数
  unset ( $page_tpl ); // 分页模板
  unset ( $pageparam ); //分页参数，默认page
  unset ( $pagelink );
  unset ( $static );
 }
 private function urlparameters($url = array()) {
  foreach ( $url as $key => $val ) {
   if ($key != $this->pageparam)
    $arg [] = $key . "=" . $val;
  }
  $arg [] = $this->pageparam . "=*";
  if ($this->static)
   return str_replace ( "{page}", "*", $this->pagelink );
  else
   return $this->pagelink . "?" . implode ( "&", $arg );
 }
 public function setpager($tpl_name = "default", $tpl = "", $config = array()) {
  if (empty ( $tpl ))
   $tpl = $this->page_tpl ["default"] ["tpl"];
  if (empty ( $config ))
   $config = $this->page_tpl ["default"] ["config"];
  $this->page_tpl [$tpl_name] = array ("tpl" => $tpl, "config" => $config );
 }
 public function getpager($tpl_name = "default") {
  $this->getcurrentpage ();
  return $this->pager ( $this->page_tpl [$tpl_name] );
 }
 public function getcurrentpage() {
  $this->current_page = ($_get [$this->pageparam] <= intval ( $this->total_pages ) ? ($_get [$this->pageparam] < 1 ? 1 : $_get [$this->pageparam]) : intval ( $this->total_pages ));
 }
 public function pager($page_tpl = "") {
  if (empty ( $page_tpl ))
   $page_tpl = $this->page_tpl ["default"];
  $cfg = array ("recordcount" => intval ( $this->total_size ), "pageindex" => intval ( $this->current_page ), "pagecount" => intval ( $this->total_pages ), "pagesize" => intval ( $this->page_size ), "listlong" => intval ( $this->sub_pages ), "listsidelong" => 2, "list" => "*", "currentclass" => "current", "link" => $this->urlparameters ( $_get ), "first" => "«", "prev" => "‹", "next" => "›", "last" => "»", "more" => "...", "disabledclass" => "disabled", "jump" => "input", "jumpplus" => "", "jumpaction" => "", "jumplong" => 50 );
  if (! empty ( $page_tpl ["config"] )) {
   foreach ( $page_tpl ["config"] as $key => $val ) {
    if (array_key_exists ( $key, $cfg ))
     $cfg [$key] = $val;
   }
  }
  $tmps教程tr = $page_tpl ["tpl"];
  $pstart = $cfg ["pageindex"] - (($cfg ["listlong"] / 2) + ($cfg ["listlong"] % 2)) + 1;
  $pend = $cfg ["pageindex"] + $cfg ["listlong"] / 2;
  if ($pstart < 1) {
   $pstart = 1;
   $pend = $cfg ["listlong"];
  }
  if ($pend > $cfg ["pagecount"]) {
   $pstart = $cfg ["pagecount"] - $cfg ["listlong"] + 1;
   $pend = $cfg ["pagecount"];
  }
  if ($pstart < 1)
   $pstart = 1;
  for($i = $pstart; $i <= $pend; $i ++) {
   if ($i == $cfg ["pageindex"])
    $plist .= "" . str_replace ( "*", $i, $cfg ["list"] ) . " ";
   else
    $plist .= " " . str_replace ( "*", $i, $cfg ["list"] ) . " ";
  }
  if ($cfg ["listsidelong"] > 0) {
   if ($cfg ["listsidelong"] < $pstart) {
    for($i = 1; $i <= $cfg ["listsidelong"]; $i ++) {
     $pliststart .= "" . str_replace ( "*", $i, $cfg ["list"] ) . " ";
    }
    $pliststart .= ($cfg ["listsidelong"] + 1) == $pstart ? "" : $cfg ["more"] . " ";
   } else {
    if ($cfg ["listsidelong"] >= $pstart && $pstart > 1) {
     for($i = 1; $i <= ($pstart - 1); $i ++) {
      $pliststart .= "" . str_replace ( "*", $i, $cfg ["list"] ) . " ";
     }
    }
   }
   if (($cfg ["pagecount"] - $cfg ["listsidelong"]) > $pend) {
    $plistend = " " . $cfg ["more"] . $plistend;
    for($i = (($cfg ["pagecount"] - $cfg ["listsidelong"]) + 1); $i <= $cfg ["pagecount"]; $i ++) {
     $plistend .= " " . str_replace ( "*", $i, $cfg ["list"] ) . " ";
    }
   } else {
    if (($cfg ["pagecount"] - $cfg ["listsidelong"]) <= $pend && $pend < $cfg ["pagecount"]) {
     for($i = ($pend + 1); $i <= $cfg ["pagecount"]; $i ++) {
      $plistend .= " " . str_replace ( "*", $i, $cfg ["list"] ) . " ";
     }
    }
   }
  }
  if ($cfg ["pageindex"] > 1) {
   $pfirst = " " . $cfg ["first"] . " ";
   $pprev = " " . $cfg ["prev"] . " ";
  } else {
   $pfirst = " " . $cfg ["first"] . " ";
   $pprev = " " . $cfg ["prev"] . " ";
  }
  if ($cfg ["pageindex"] < $cfg ["pagecount"]) {
   $plast = " " . $cfg ["last"] . " ";
   $pnext = " " . $cfg ["next"] . " ";
  } else {
   $plast = " " . $cfg ["last"] . " ";
   $pnext = " " . $cfg ["next"] . " ";
  }
  switch (strtolower ( $cfg ["jump"] )) {
   case "input" :
    $pjumpvalue = "this.value";
    $pjump = "     $pjump .= " onkeydown="网页特效:if(event.charcode==13||event.keycode==13){if(!isnan(" . $pjumpvalue . ")){";
    $pjump .= ($cfg ["jumpaction"] == "" ? ((strtolower ( substr ( $cfg ["link"], 0, 11 ) ) == "javascript：") ? str_replace ( "*", $pjumpvalue, substr ( $cfg ["link"], 12 ) ) : " document.location.href="" . str_replace ( "*", ""+" . $pjumpvalue . "+"", $cfg ["link"] ) . "";") : str_replace ( "*", $pjumpvalue, $cfg ["jumpaction"] ));
    $pjump .= "}return false;}" />";
    break;
   case "select" :
    $pjumpvalue = "this.options[this.selectedindex].value";
    $pjump = "";
    break;
  }
  $patterns = array ("/{recordcount}/", "/{pagecount}/", "/{pageindex}/", "/{pagesize}/", "/{list}/", "/{liststart}/", "/{listend}/", "/{first}/", "/{prev}/", "/{next}/", "/{last}/", "/{jump}/" );
  $replace = array ($cfg ["recordcount"], $cfg ["pagecount"], $cfg ["pageindex"], $cfg ["pagesize"], $plist, $pliststart, $plistend, $pfirst, $pprev, $pnext, $plast, $pjump );
  $tmpstr = chr ( 13 ) . chr ( 10 ) . preg_replace ( $patterns, $replace, $tmpstr ) . chr ( 13 ) . chr ( 10 );
  unset ( $cfg );
  return $tmpstr;
 }
}
?>

本文来源：http://www.gdgbn.com/shujuku/27933/