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PHP文章分页报错，求指教。
- WBOYOriginal
- 2016-06-06 20:50:021132browse
<code>class StrPage{
private $file;//文件内容
private $current;//当前页
private $totalPage;//总的页数
private $url;//url地址
private $pageLen;//每页显示的内容长度
function __construct($file,$len=500){
$this->file = file_get_contents($file);
$this->current=isset($_GET['page'])?$_GET['page']:1;
$this->pageLen = $len;
$this->totalPage = $this->getTotalPage();
$this->url= $this->getUrl();
}
private function getTotalPage(){
return ceil(strlen($this->file)/$this->pageLen);
}
private function getUrl(){
$url =parse_url($_SERVER['REQUEST_URI']);
parse_str($url['query'],$queryArr);
unset($queryArr['page']);
$queryStr = http_build_query($queryArr);
return $url['path'].'?'.$queryStr.'&page=';
}
private function first(){
if($this->current>1)return "<a href="%22.%24this->url.%221">首页</a>";
}
private function pre(){
if($this->current>1)return "<a href="%22.%24this->url.(%24this->current-1).%22">上一页</a>";
}
private function next(){
if($this->currenttotalPage)return "<a href="%22.%24this->url.(%24this->current+1).%22">下一页</a>";
}
private function end(){
if($this->currenttotalPage) return "<a href="%22.%24this->url.%24this->totalPage.%22">末页</a>";
}
private function pageList(){
for ($i=1;$itotalPage;$i++){
if($i==$this->current){
$pageListStr.="<span style="font-size:20px;color:#f00">".$i."</span> ";
}else{
$pageListStr.="<a href="%22.%24this->url.%24i.%22">".$i." </a>";
}
}
return $pageListStr;
}
public function pageStyle($style=1){
switch ($style){
case 1:
return "共有".$this->totalPage."页".$this->first().$this->pre().$this->pageList().$this->next().$this->end();
break;
case 2;
return $this->pageList();
break;
}
}
public function getContents(){
$prePageLen = strlen($this->subStrs($this->current-1));
$currentPageLen = strlen($this->subStrs($this->current));
return substr($this->file, $prePageLen,$currentPageLen-$prePageLen);
}
private function subStrs($page){
$len= $page*$this->pageLen;
for ($i = 0; $i file,$i,1))>0xa0){
$string.=substr($this->file,$i,2);
$i++;
}else{
$string.=substr($this->file,$i,1);
}
}
return $string;
}
}
$php = new StrPage('75.txt',2000);
echo "<div style="font-size:14px;line-height:1.8em;color:#666;padding:6px;width:960px;height:450px;">".$php->getContents()."</div>";
echo "<div style="border:solid 1px #ccc;font-size:14px;color:#333">";
echo $php->pageStyle();
echo "</div>";
</code>
浏览器报错如下
请输入图片描述
经过@依云的指点，果然是编码的问题 我把读取的TXT文件另存为UTF-8格式后在火狐打开没有乱码了，但是在谷歌打开就变成全是乱码了，这样来说，我们编写的时候一般定义成什么样的编码才符合规范？
回复内容：
<code>class StrPage{
private $file;//文件内容
private $current;//当前页
private $totalPage;//总的页数
private $url;//url地址
private $pageLen;//每页显示的内容长度
function __construct($file,$len=500){
$this->file = file_get_contents($file);
$this->current=isset($_GET['page'])?$_GET['page']:1;
$this->pageLen = $len;
$this->totalPage = $this->getTotalPage();
$this->url= $this->getUrl();
}
private function getTotalPage(){
return ceil(strlen($this->file)/$this->pageLen);
}
private function getUrl(){
$url =parse_url($_SERVER['REQUEST_URI']);
parse_str($url['query'],$queryArr);
unset($queryArr['page']);
$queryStr = http_build_query($queryArr);
return $url['path'].'?'.$queryStr.'&page=';
}
private function first(){
if($this->current>1)return "<a href="%22.%24this->url.%221">首页</a>";
}
private function pre(){
if($this->current>1)return "<a href="%22.%24this->url.(%24this->current-1).%22">上一页</a>";
}
private function next(){
if($this->currenttotalPage)return "<a href="%22.%24this->url.(%24this->current+1).%22">下一页</a>";
}
private function end(){
if($this->currenttotalPage) return "<a href="%22.%24this->url.%24this->totalPage.%22">末页</a>";
}
private function pageList(){
for ($i=1;$itotalPage;$i++){
if($i==$this->current){
$pageListStr.="<span style="font-size:20px;color:#f00">".$i."</span> ";
}else{
$pageListStr.="<a href="%22.%24this->url.%24i.%22">".$i." </a>";
}
}
return $pageListStr;
}
public function pageStyle($style=1){
switch ($style){
case 1:
return "共有".$this->totalPage."页".$this->first().$this->pre().$this->pageList().$this->next().$this->end();
break;
case 2;
return $this->pageList();
break;
}
}
public function getContents(){
$prePageLen = strlen($this->subStrs($this->current-1));
$currentPageLen = strlen($this->subStrs($this->current));
return substr($this->file, $prePageLen,$currentPageLen-$prePageLen);
}
private function subStrs($page){
$len= $page*$this->pageLen;
for ($i = 0; $i file,$i,1))>0xa0){
$string.=substr($this->file,$i,2);
$i++;
}else{
$string.=substr($this->file,$i,1);
}
}
return $string;
}
}
$php = new StrPage('75.txt',2000);
echo "<div style="font-size:14px;line-height:1.8em;color:#666;padding:6px;width:960px;height:450px;">".$php->getContents()."</div>";
echo "<div style="border:solid 1px #ccc;font-size:14px;color:#333">";
echo $php->pageStyle();
echo "</div>";
</code>
浏览器报错如下
请输入图片描述
经过@依云的指点，果然是编码的问题 我把读取的TXT文件另存为UTF-8格式后在火狐打开没有乱码了，但是在谷歌打开就变成全是乱码了，这样来说，我们编写的时候一般定义成什么样的编码才符合规范？
这个你定位到具体的行看下上下相邻的变量时候预先定义了 乱码html 设置
<code><meta charset="utf-8"> </code>
或者在 php开头header("Content-Type:text/html;charset='utf-8') 就行了
代码贴得好乱。那个错误是 PHP 报的，显示在了浏览器那边而已。
那个 Notice 说得很清楚了，那个变量没有定义。你应该先$pageListStr = ''。
乱码可能是因为你没有指定页面的编码。比如
<code><meta charset="utf-8"> </code>
对于比较老的浏览器，需要使用更长的 meta 标签。记得把它放在页面靠前的地方。
也可能是你读取的 txt 文件的编码和浏览器/PHP脚本中使用的不一致。可以使用 iconv 转换下。
一般定义，然后把文档也调整为utf8就OK了。
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