迷途知返 » PHP http://pwwang.com 专注技术,用心生活! Fri, 02 Jul 2010 02:26:53 +0000 en hourly 1 http://wordpress.org/?v=3.0 php分页类 http://pwwang.com/technology/php/php%e5%88%86%e9%a1%b5%e7%b1%bb/ http://pwwang.com/technology/php/php%e5%88%86%e9%a1%b5%e7%b1%bb/#comments Wed, 27 May 2009 07:58:09 +0000 pwwang http://pwwang.com/?p=628 Read More: 7999 Words Totally]]>  

写了一个功能相对比较全面的php分页类,包括两种分页模式,两种底部链接显示模式,可以进行任意搭配, 另外还包括服务端和客户端排序.

其中对数据库的操作采用的是这个类. 需要对$db按自己的实际情况进行实例化.

客户端排序需要jquery.js库文件和jquery.tablesorter.js文件.

先看两种分页模式的效果图:

paginate


 

paginate1



第一种模式的调用代码:

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            function show_del($id){
                return "<input type=button value=$id>";    
            }
            $pagination = new paginate(array(
                sql     => 'SELECT * FROM `dishes`',
                theader    => 'ID,Dish_name,Dish_price,Dish_Dir,Manipulation',
                tbody    => '<tr><td>{var:dish_id}</td><td>{var:dish_name}</td><td>{var:dish_sm_price}</td><td>{var:dish_dir}</td><td>{var:dish_id;fun:show_del}</td></tr>',
                linkmode => 1,
                orderbys => 'dish_id:ID;dish_name:NAME;dish_sm_price:PRICE',
                clientsort => 1
            ));    
            $pagination->show();

第二种模式的调用代码:

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            function show_del($id){
                return "<input type=button value=$id>";    
            }
            $pagination = new paginate(array(
                sql     => 'SELECT * FROM `dishes`',
                theader    => 'ID,Dish_name,Dish_price,Dish_Dir,Manipulation',
                tbody => '<div>dish_id:{var:dish_id}<br>dish_name:{var:dish_name}<br>dish_price:{var:dish_sm_price}</div>',
                mode =>1,
                orderbys => 'dish_id:ID;dish_name:NAME;dish_sm_price:PRICE',
                clientsort => 1
            ));    
            $pagination->show();

类的代码:

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class paginate{
    var $data = array();    // data show in this page
    var $count;                // total count of the records
    var $page;                // page number of this page
    var $sql;                // total records sql, including 'order by' clause
    var $limit = 12;        // how many records to show in this page
    var $mode = 0;            // 2 modes, 0 for one record in one line with headers; 
                            //          1 for multiple records in one line without headers
    var $theaders;            // headers for mode 0, like "ID,姓名,电话,..."
    var $tbody;                // cycle body
                            // for mode 0, $tbody is like "<tr><td>{var:id;fun:fun1}</td>...<td>{var:value;fun:fun2}</td></tr>"
                            // for mode 1, $tbody is like "<div>{var:id;fun:fun1}</div>"
    var $rnpl = 4;            // Records Number Per Line, just for mode 1.
    var $linkmode = 0;        // temporarily 2 like modes. One displays page numbers by combo box; another displays them directly.
    var $rnthis;            // Records Number in THIS page. It equals to $limit, but probably not in the last page.
    var $colnames = array();// colomn names in this table
    var $pagenum;            // total page number
    var $maxpagenum = 11;    // for linkmode 1, how many page numbers to show, odd number required    
    var $tableid = 'paginate_table';
    var $orderbys;            // "id:序号;name:姓名;phone:电话"
    var $orderby;
    var $rank = 'ASC';
    var $clientsort = 0;    // close client sort as default
    function paginate($opts){
        global $db;            // ensure include db.class.php
        $this->sql        = $opts['sql'];
        $theader        = $opts['theader'];
        $this->theaders = split(',',$theader);
        $this->tbody    = $opts['tbody'];
        $this->page     = $_GET['page'];
        if($opts['limit'])        $this->limit    = $opts['limit'];
        if($opts['mode'])        $this->mode        = $opts['mode'];
        if($opts['rnpl'])        $this->rnpl        = $opts['rnpl'];
        if($opts['linkmode'])    $this->linkmode    = $opts['linkmode'];
        if(!$this->page)         $this->page     = 1;
        $this->count     = $db->num_rows($this->sql);
        $this->pagenum = ceil($this->count/$this->limit);
        if($this->page < 1) $this->page = 1;
        if($this->page > $this->pagenum) $this->page = $this->pagenum;
        if($opts['orderbys'])$this->orderbys = $opts['orderbys'];
        if($this->orderbys){
            $this->sql = preg_replace('/order\s+by\s+.+(?:\s+(?:a)|(?:de)sc)?/i','',$this->sql);
            $getorderby = split(' ',$_GET['orderby']);
            if($getorderby[0]) $this->orderby = $getorderby[0];
            else { 
                $obs = split(':',$this->orderbys);
                $this->orderby = $obs[0];
            }
            if($getorderby[1]) $this->rank = $getorderby[1];
            $this->sql .= " ORDER BY `".$this->orderby."` ".$this->rank;
        }
        $thissql        = $this->sql." limit ".($this->page-1)*$this->limit.",".$this->limit;
        $this->data     = $db->fetch_all($thissql);
        $this->rnthis    = $db->num_rows($thissql);
        preg_match_all("/\{var:(.+?)(;fun:.+?)?\}/",$this->tbody,$matches);
        $this->colnames    = $matches[1];
        if($opts['maxpagenum'])$this->maxpagenum = $opts['maxpagenum'];
        if($opts['tableid'])$this->tableid = $opts['tableid'];
        if($opts['clientsort'])$this->clientsort = $opts['clientsort'];
    }
 
    function getHeaders(){
        if(!$this->mode){
            $headers_str = "<thead><tr>";
            foreach ($this->theaders as $h){
                $headers_str .= "<th>$h</th>";    
            }
            $headers_str .= "</tr></thead>\n";
            return $headers_str;
        }
        return '';
    }
 
    function show(){
        $show_str = "";
        if($this->orderbys){
            $show_str .= "排序依据:   ";
            $orderbyss = split(';',$this->orderbys);
            foreach ($orderbyss as $ob){
                preg_match("/^(.+?)\:(.+)$/",$ob,$matches);    
                if($this->orderby == $matches[1]){
                    $show_str .= $this->getLink("orderby",$this->orderby." ".($this->rank=='ASC'?'DESC':'ASC'),$matches[2].($this->rank=='ASC'?'↑':'↓'),"title=按".$matches[2].($this->rank=='ASC'?'降':'升')."序排列")."   ";
                } else {
                    $show_str .= $this->getLink("orderby",$matches[1]." ASC",$matches[2].'☆',"title=按".$matches[2]."升序排列")."   ";
                }
            }
        }
        $show_str .= '<table id="'.$this->tableid.'" cellspacing=1 '.($this->clientsort?'clientsort=1':'').'>';
        if($this->mode){
            $show_str .= '<tbody>';
            for($i=0; $i<ceil($this->rnthis/$this->rnpl); $i++){
                $show_str .= "<tr>";
                for($j=0; $j<$this->rnpl; $j++){  // ---------
                    $show_str .= "<td>";
                    $body = $this->tbody;
                    for($k=0; $k<count($this->colnames); $k++){
                        $body = preg_replace("/\{var:(".preg_quote($this->colnames[$k]).")(;fun:.+?)?\}/","{var:".$this->data[$i*$this->rnpl+$j][$this->colnames[$k]]."$2}",$body);
                    }
                    if($j < $this->rnthis-$i*$this->rnpl) $show_str .= preg_replace("/\{var:([\s\S]+?)(?:;fun:(.+?))?\}/e","$2('$1')",$body);
                    $show_str .= "</td>";    
                }
                $show_str .= "</tr>";
            }
        } else {
            $show_str .= $this->getHeaders();
            $show_str .= '<tbody>';
            for($j=0; $j<$this->rnthis; $j++){  // ---------
                $body = $this->tbody;
                for($k=0; $k<count($this->colnames); $k++){
                    $body = preg_replace("/\{var:(".preg_quote($this->colnames[$k]).")(;fun:.+?)?\}/","{var:".$this->data[$j][$this->colnames[$k]]."$2}",$body);
                }
                $show_str .= preg_replace("/\{var:([\s\S]+?)(?:;fun:(.+?))?\}/e","$2('$1')",$body);
            }
        }
        $show_str .= '</tbody>';
        $show_str .= $this->getLinks();
        $show_str .= '</table>';
        echo $show_str;
    }
 
    function getHref($parms, $values){
        $ps = $_GET;
        if(is_array($parms)){
            for($i=0; $i<count($parms); $i++){
                $ps[$parms[$i]] = $values[$i];
            }
        } else {
            $ps[$parms] = $values;
        }
        $link = $_SERVER['PHP_SELF']."?";
        foreach ($ps as $k => $v){
            $link .= $k."=".urlencode($v)."&";
        }
        if(substr($link,-1) == "&") $link = substr($link,0,-1);
        return $link;        
    }
 
    function getLink($parms, $values, $str="", $attr = ""){
        return "<a href='".$this->getHref($parms, $values)."' $attr>$str</a>";
    }
 
    function getLinks(){
        $links_str = "<tfoot><tr><td colspan=".($this->mode?$this->rnpl:count($this->theaders))." style='text-align:center'>";
        if(!$this->linkmode) $links_str .= "第".(($this->page-1)*$this->limit+1)."~".(($this->page-1)*$this->limit+$this->rnthis)."条/共".$this->count."条记录 ";
        $links_str .= "[".($this->page>1?$this->getLink("page",1,"首页"):"首页")."] ";
        $links_str .= "[".($this->page>1?$this->getLink("page",$this->page-1,"上页"):"上页")."] ";
        if($this->linkmode){
            if($this->pagenum <= $this->maxpagenum){
                for($i=1; $i<=$this->pagenum; $i++){
                    if($this->page == $i) $links_str .= $this->getLink("page",$i,$i,"class=thispage")." ";
                    else $links_str .= $this->getLink("page",$i,$i)." ";
                }
            } else {
                if($this->page <= ($this->maxpagenum+1)/2) $startnum = 1;
                else $startnum = $this->page - ($this->maxpagenum+1)/2 + 1;
                if($this->pagenum - $this->page < ($this->maxpagenum+1)/2) $endnum = $this->pagenum;
                else $endnum = $this->page + ($this->maxpagenum+1)/2 - 1;
                if($startnum > 1){
                    $links_str .= $this->getLink("page",$startnum-1,"...");
                }
                for($i=$startnum; $i<=$endnum; $i++){
                    if($this->page == $i) $links_str .= $this->getLink("page",$i,$i,"clas=thispage")." ";
                    else $links_str .= $this->getLink("page",$i,$i)." ";
                }
                if($endnum < $this->pagenum){
                    $links_str .= $this->getLink("page",$endnum+1,"...");
                }
            }
        }
        $links_str .= "[".($this->page<$this->pagenum?$this->getLink("page",$this->page+1,"下页"):"下页")."] ";
        $links_str .= "[".($this->page<$this->pagenum?$this->getLink("page",$this->pagenum,"尾页"):"尾页")."] ";
        if(!$this->linkmode){
            $links_str .= "第<select onchange=\"javascript:location='".$this->getHref("page","")."'.replace('page=','page='+this.value)\">\n";
            for($i=1; $i<=$this->pagenum; $i++){
                if($i == $this->page) $links_str .= "<option value=".$i." selected>".$i."</option>\n";
                else $links_str .= "<option value=".$i." >".$i."</option>\n";    
            }
            $links_str .= "</select>页/";
        }
        $links_str .= "共".$this->pagenum."页</td></tr></tfoot>";
        return $links_str;
    }
}

样式设置js(需要先引用jquery.js)

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function setpaginatestyle(paginate_table_id){
    if(paginate_table_id == undefined) paginate_table_id = '#paginate_table';
    pbody = paginate_table_id + '>tbody>';
    phead = paginate_table_id + '>thead>';
    pfoot = paginate_table_id + '>tfoot>';
    var tablebordercolor = '#5d7e49';
    var tdheight = '24px';
    var tdpadding = '2px';
    var oddtrbgcolor = '#b4bcaf';
    var eventrbgcolor = '#fff';
    var overtrbgcolor = '#dedfdd';
    var thbgcolor = '#8b9f7f';
    var thcolor = '#fff';
    var footerbgcolor = '#fff';
    var footeraborder = '1px 3px 1px 3px';
    var tablewidth = '450px';
    $(paginate_table_id).css({
        'background-color':tablebordercolor,
        'width':tablewidth
    });
    $(pbody+'tr>td').add(phead+'tr>th').add(pfoot+'tr>td').css({
        'padding':tdpadding,
        'height':tdheight
    });
    $(phead+'tr').css({
        'background-color':thbgcolor,
        'color':thcolor
    });
 
    $(pbody+'tr:odd')
                    .css('background-color',oddtrbgcolor)
                    .hover(
        function(){
            $(this).css({'background-color':overtrbgcolor});    
        },
        function(){
            $(this).css({'background-color':oddtrbgcolor});
        }        
    );
    $(pbody+'tr:even')
                     .css('background-color',eventrbgcolor)
                     .hover(
        function(){
            $(this).css('background-color',overtrbgcolor);    
        },
        function(){
            $(this).css('background-color',eventrbgcolor);
        }        
    );        
    $(pfoot+'tr').css('background-color',footerbgcolor).unbind();
    $(pfoot+'tr a').css('padding',footeraborder);
    $(pfoot+'tr a.thispage').css({
        'background-color':oddtrbgcolor,
        'border':'1px solid '+tablebordercolor
    });
    if($(paginate_table_id).attr('clientsort')){
        $('head').append('<script language="javascript" src="js/jquery.tablesorter.js"></script>');
        $(paginate_table_id).tablesorter();
    }
}
 
$(document).ready(function(){
    setpaginatestyle();    
});

 

]]> http://pwwang.com/technology/php/php%e5%88%86%e9%a1%b5%e7%b1%bb/feed/ 5 php的mysql数据库操作类 http://pwwang.com/technology/php/php%e7%9a%84mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e6%93%8d%e4%bd%9c%e7%b1%bb/ http://pwwang.com/technology/php/php%e7%9a%84mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e6%93%8d%e4%bd%9c%e7%b1%bb/#comments Mon, 25 May 2009 07:58:38 +0000 pwwang http://pwwang.com/?p=624 Read More: 2002 Words Totally]]> 
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class dbconn {
    var $conn = 0;
    function dbconn($dbhost,$dbuser,$dbpw,$dbname){
        $this->conn = mysql_connect($dbhost,$dbuser,$dbpw);
        !$this->conn && $this->halt("Connect to MySQL failed");
        $serverinfo = mysql_get_server_info($this->conn);
        if ($serverinfo > '4.1' && $GLOBALS['charset']) {
            mysql_query("SET character_set_connection=".$GLOBALS['charset'].",character_set_results=".$GLOBALS['charset'].",character_set_client=binary",$this->conn);
        }
        if ($serverinfo > '5.0') {
            mysql_query("SET sql_mode=''",$this->conn);
        }
        if ($dbname && !@mysql_select_db($dbname,$this->conn)) {
            $this->halt('Cannot use database');
        }
    }
    function select_db($dbname){
        if (!@mysql_select_db($dbname,$this->conn)) {
            $this->halt('Cannot use database');
        }
    }
    function server_info(){
        return mysql_get_server_info($this->conn);
    }
    function insert_id(){
        $arr = $this->fetch_array('SELECT LAST_INSERT_ID() as id');
 
        return $arr["id"];
    }
    function get_value($SQL,$offset=0,$field=0){
        $rt = $this->fetch_all($SQL);
        if (isset($rt[$offset][$field])) {
            return $rt[$offset][$field];
        }
        return false;
    }
 
    function query($SQL,$method = null,$error = true){
        $query = mysql_query($SQL,$this->conn);
        !$query && $error && $this->halt('Query Error: '.$SQL);
        return $query;
    }
    function fetch_array($SQL){
        $query = $this->query($SQL);
        return mysql_fetch_array($query);
    }
    function fetch_all($SQL) {
        $arr = array();
        $query = $this->query($SQL);
        while($data = mysql_fetch_array($query)) {
            $arr[] = $data;
        }
        return $arr;
    }
    function affected_rows(){
        return mysql_affected_rows($this->conn);
    }
    function num_rows($SQL){
        $query = $this->query($SQL);
        if (!is_bool($query)) {
            return mysql_num_rows($query);
        }
        return 0;
    }
    function num_fields($SQL){
        $query = $this->query($SQL);
        return mysql_num_fields($query);
    }
    function escape_string($str){
        return mysql_escape_string($str);
    }
    function free_result(){
        $void = func_get_args();
        foreach ($void as $query) {
            if (is_resource($query) && get_resource_type($query)==='mysql result') {
                mysql_free_result($query);
            }
        }
        unset($void);
    }
    function close(){
        $this->free_result();
        return @mysql_close($this->conn);
    }
    function halt($msg=null){
        exit($msg.'<br /><br />'.$sql.'<br /> '.mysql_error());
    }
}
$db = new dbconn("localhost:3306","root","","howard");

 

]]> http://pwwang.com/technology/php/php%e7%9a%84mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e6%93%8d%e4%bd%9c%e7%b1%bb/feed/ 2 类外函数调用类的成员变量和成员函数 http://pwwang.com/technology/php/%e7%b1%bb%e5%a4%96%e5%87%bd%e6%95%b0%e8%b0%83%e7%94%a8%e7%b1%bb%e7%9a%84%e6%88%90%e5%91%98%e5%8f%98%e9%87%8f%e5%92%8c%e6%88%90%e5%91%98%e5%87%bd%e6%95%b0/ http://pwwang.com/technology/php/%e7%b1%bb%e5%a4%96%e5%87%bd%e6%95%b0%e8%b0%83%e7%94%a8%e7%b1%bb%e7%9a%84%e6%88%90%e5%91%98%e5%8f%98%e9%87%8f%e5%92%8c%e6%88%90%e5%91%98%e5%87%bd%e6%95%b0/#comments Tue, 18 Nov 2008 16:26:40 +0000 pwwang http://pwwang.com/?p=5 Read More: 722 Words Totally]]> 首先希望大家不要把我当火星人 ^_^!

类外函数是不能直接调用类的成员变量和成员函数的,　以前根本没有意识到这样的问题

是这样的：

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<?php
class varhead{
var title;
function varhead(title='welcome'){
$this->title=title;
}
function setTitle(title='welcome'){
$this->title=title;
}
}
$varhead=new varhead();
//我先定义了这样一个类,　是用来设置网页的各种头部信息的.
//并且将它实例化
function isHome(){
if($varhead->title=='welcome')echo 'HomePage';
}
//这是一个类外函数,　我想调类varhead的成员变量title的值.
//但是没想到,　在函数isHome中怎么也得不到$varhead->title的值.
//我开始意识到,　在类外函数中,　可能不能直接调用类的成员变量
//我试过这样,　但仍然不行：
/*
$t=$varhead->title;
function isHome(){
if($t=='welcome')echo 'HomePage';
}
*/
?>

后来我在百度上找到一种解决办法,　就是在类外的函数中重新实例化一个类对象,　然后而进行调用.

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function isHome(){
$varhead1=new varhead();
if($varhead1->title=='welcome')echo 'HomePage';
}

这样是可以的,　可以得到$varhead1->title的值.

但是新的问题又出现了,　这个实例化的对象$varhead1和我原来实例化的对象$varhead是两个不同的对象,　也就是说,如果我先设置了title.

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$varhead->setTitle("products");

这样对函数中的对象$varhead1将不会有任何的影响,　而$varhead1->title的值还将会是默认值’welcome’,　仍然判断不出该页是否首页.

后来再想到WP的一个插件CountPosts,　由于我改过这个插件,　在里面加了留言数,评论数以及文章的点击数,　发现这个插件里面的函数可以直接使用WP实例化的数据库类$wpdb,　但它每个函数前面都将这个对象声明为了全局变量.

于是我也试试,发现这样才是解决问题的根本途径：

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function isHome(){
global $varhead;
if($varhead->title=='welcome')echo 'HomePage';
}

这样问题就得到了完美的解决.

也就是说要想从类外函数调用类的成员变量和成员函数就必须在类外的函数中global一下类(PS:我不知道这个操作叫什么, 什么不是声明吧),才能调用类的成员变量和函数.

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