我的分页,但是有错误,帮忙看看
这是我写的分页。但是有错误哦,比如我点末页后再点上一页,她还是在这一页,我点了首页再点下一页之后也是这个情况,求教!
$sql = "select * from pl_transaction_sun";
$query = mysql_query($sql);
$num = mysql_num_rows($query);
$pagesize = 3;
$start = $_GET['start'];
$flag = $_GET['flag'];
//判断$start是否有值
if ($start == null) {
$start = 0;
}
//判断$flag是否有值
if ($flag == null) {
$flag = 0;
}
$sql1 = "select * from pl_transaction_sun limit $start, $pagesize";
$query1 = mysql_query($sql1);
//$num1 = mysql_num_rows($query1);
//判断标志位以确定$start的值
if ($flag == 1 and $start+$pagesize $start = $start+$pagesize;
}
if ($flag == 2 and $start+$pagesize > 0){
$start = $start-$pagesize;
}
//最后一页START标识
if (($num % $pagesize) != 0){
$lastpage = $num - ($num % $pagesize);
}else{
$lastpage = $num - $pagesize;
}
//判断页数以及当前页代码
$pagenum = ceil($num / $pagesize);
if ($start == 0){
$nowpage = 1;
}else{
$nowpage = ($start / $pagesize) + 1;
}
print ("
//分页显示判断部分
if ($start == 0 and $pagesize print ("【首页】【上页】
【下页】
【末页】");
}elseif ($start >= $num-$pagesize and $pagesize print ("
【首页】
【上页】
【下页】【末页】");
}elseif ($pagesize >= $num ){
print ("【首页】【上页】【下页】【末页】");
}else{
print ("
【首页】
【上页】
【下页】
【末页】");
}
------解决方案--------------------
$query1 = mysql_query($sql1);
应在新的 $start 产生后执行
控制逻辑太复杂,只需传递一个期望显示的页号就可以了。建议调整一下
------解决方案--------------------
对于一个初学者,神马都是浮云……
------解决方案--------------------
分页其实很简单,定好一页显示多少条,然后计算所有条数
------解决方案--------------------
分页是web程序必须跨越的一个小沟。花点时间是值得的。
因为使用地方太多,所以需要封装成一个函数或类中的一个方法
- PHP code
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