php入门mysql分页PageQuery类

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。？php
include("dbClass.inc");
class PageQuery extends dbClass {
    var $Offset;             // 记录偏移量
    var $Total;             // 记录总数
     
    var $maxLine;             // 记录每页显示记录数
    var $result;             // 读出的结果
   
    var $TPages;             // 总页数
    var $CPages;             // 当前页数
   
    var $PageQuery;         // 分页显示要传递的参数
    var $Query;             // query 语句
    var $QueryPart;         // " FROM " 以后的 query 部分
    var $QueryString;         // ？ 以后部分 
     
    var $FilePath;
           
    // 每页显示行数
    function PageQuery($pageLine=10) {   
        $this-dbClass();
        $this-maxLine = $pageLine;
      }
     
      // 记录总数
    function getTotal(){
        return $this-Total;
    }
     
      // 显示总页数
    function getTotalPages() {
        return $this-TPages;
    }

    //显示当前所在页数
    function getCurrenPages() {         
        return $this-CPages;
    }
   
    function myQuery($sql, $flag=1){
            GLOBAL $offset;
            $this-Query = $sql;
       
        // 获取文件名
        //$this-FilePath = $GLOBALS["REQUEST_URI"];
            $this-FilePath = $GLOBALS["SCRIPT_NAME"];
           
            // 获取查询条件
            $this-QueryString = $GLOBALS["QUERY_STRING"];           
            //echo $this-QueryString . "br";           
           
            // 截取 " from " 以后的 query 语句
   &nbs

MySQL教程是:php入门mysql分页PageQuery类。p;        $this-QueryPart = trim(strstr($sql, " from "));
           
            // 计算偏移量
            if (!isset($offset)) $this-Offset = 0;
            else $this-Offset = (int)$offset;                            

（本文来源于图老师网站，更多请访问https://www.tulaoshi.com/bianchengyuyan/）       // 计算总的记录条数
        $SQL = "SELECT Count(*) AS total " . $this-QueryPart;
        $this-result = $this-executeQuery($SQL);
            $this-Total = mysql_result($this-result,0);
           
            // 设置当前页数和总页数
        $this-TPages = (double)Ceil((double)$this-Total/$this-maxLine);
        $this-CPages = (double)Floor((double)$this-Offset/$this-maxLine+1);
       
       
        // 根据条件判断，取出所需记录
        if ($this-Total 0) {
            //flag等于1表示要分页，否则不分页
            if($flag==1)
                $SQL = $this-Query . " LIMIT " . $this-Offset . " , " . $this-maxLine;
            else
                $SQL = $this-Query;           
            echo $SQL . "br";
            $this-$result = $this-executeQuery($SQL);
        }
        return $this-result;
    }
   
    //**********显示翻页提示栏************* 
    // 显示首页、下页、上页、尾页
    function PageLegend() {       
        $str = "";
        $i = 0;
        $first = 0;
        $next = 0;
        $prev = 0;
        $last = 0;
   
            $next = $this-Offset + $this-maxLine;
            $prev = $this-Offset - $this-maxLine;
            $last = ($this-TPages - 1) * $this-maxLine;
           
         &nb

MySQL教程是:php入门mysql分页PageQuery类。sp;  GLOBAL $offset;
            if (!isset($offset)) $this-QueryString .= "&offset=";
            else{
                $this-QueryString = substr($this-QueryString,0,strrpos($this-QueryString,''&'')) . "&offset=";
            }
           
            if($this-Offset = $this-maxLine)
            $str .=  " A href=" . $this-FilePath . "？" . $this-QueryString . $first . "首页/A ";
            else $str .= " 首页 ";
       
        if($prev = 0)
            $str .=  " A href=" . $this-FilePath . "？" . $this-QueryString . $prev . "前页/A ";
        else $str .= " 前页 ";
       
        if($next $this-Total)
            $str .=  " A href=" . $this-FilePath . "？" . $this-QueryString . $next . "后页/A ";
        else $str .= " 后页 ";
       
        if($this-TPages != 0 && $this-CPages $this-TPages)
            $str .=  " A href=" . $this-FilePath . "？" . $this-QueryString . $last . "尾页/A";
        else $str .= " 尾页 ";

（本文来源于图老师网站，更多请访问https://www.tulaoshi.com/bianchengyuyan/）

        $str .= " 页次：" . $this-getCurrenPages() . "/" . $this-getTotalPages() . "页 ";
        $str .= $this-maxLine . "条/页 " . "共" . $this-Total . "条";
            return $str;
    }
}
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