ホームページ >バックエンド開発 >PHPチュートリアル >PHP文章分页报错,求指教。
<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
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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?
<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。