XPATH无法在HTML上工作 [英] XPATH not working on the HTML
本文介绍了XPATH无法在HTML上工作的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个代码从我的本地web服务器 localhost 读取一个HTML文件，然后将它转换为 XHTML 与 tidy 。然后我将 XHTML 加载到我的 DOM 中。代码看起来像这样
<？php
函数getXHTML（$ html ）
{
$ options = array（output-html=> true，quote-nbsp=> true，drop-proprietary-attributes=> true， font-tags=> true，drop-empty-paras=> true，hide-comments=> true）;
$ tidy = new tidy（）;
$ xhtml = $ tidy-> repairString（$ html，$ options）;
echo $ xhtml;
返回$ xhtml;
}
$ content = file_get_contents（http：//localhost/filename.htm）;
$ page = new DOMDocument（）;
$ xpath = new DOMXPath（$ page）;
$ content = getXHTML（$ content）; //这是一个整洁的函数来返回XHTML
$ page-> loadHTML（$ content）;
$ totalPath =// body / table [3] / tbody / tr [1] / td [4];
$ total = $ xpath-> query（$ totalPath）;
echo $ total->长度; //这显示零
？>
filename.htm 的内容看起来像这
<！ - 从url =（0041）保存http://www.rtu.ac.in/results /reformat.php - >
< html>< head>< meta http-equiv =Content-Typecontent =text / html; charset = UTF-8>
< link rel =SHORTCUT ICONhref =http://www.rtu.ac.in/favicon.ico>
< title>结果 - 拉贾斯坦理工大学< / title>
< / head>
< body>
< tbody>< tr height =60>
< td width =16％height =60valign =top>< font color =brownsize =+ 2>< img src =./结果 - 拉贾斯坦邦技术大学6_files / logo.jpgwidth =100height =102border =0align =right>& nbsp;< / font>< / td>
< td width =72％height =60align =centervalign =top>< p>< font color =brownsize =+ 2> < strong> RAJASTHAN TECHNICAL UNIVERSITY< / strong>< / font>< / p>< font color =brownsize =+ 2>
< p>< font size =+ 1>< strong> B.Tech -IVth SEMESTER -2010（Main）16.5.2011< / strong>< / font>< / p> ;< font size =+ 1>& nbsp;< / font>< / font>< / td>
< td width =12％height =80>< strong> www.rtu.ac.in< / strong>& nbsp;< / td>
< / tr>
< / tbody>< / table>
< br>
< br>
< tbody>
< tr>
< td width =34％align =centervalign =toprowspan =2>< strong>主题名称< / strong>& nbsp;< / TD>
< td width =10％align =centervalign =topcolspan =1rowspan =2> < strong>主题（s）代码< / strong>& nbsp;< / td>
< tr>
< td width =18％align =center>& nbsp;< / td>
< / tr>
< tr>
< td width =34％align =centerstyle =border-bottom：0px none transparent;>< strong> SUBJECT-1< / strong>& nbsp;< TD>
< td width =10％align =centerstyle =border-bottom：0px none transparent;> 4551< / td>
< td width =20％align =centerstyle =border-bottom：0px none transparent;> 16 LT; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 50℃; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< / tr>
< tr>
< td width =34％align =centerstyle =border-bottom：0px none transparent;>< strong> SUBJECT-2< / strong>& nbsp;< TD>
< td width =10％align =centerstyle =border-bottom：0px none transparent;>& nbsp; 4552< / td>
< td width =20％align =centerstyle =border-bottom：0px none transparent;> 17 LT; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 61℃; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< / tr>
< tr>
< td width =34％align =centerstyle =border-bottom：0px none transparent;>< strong> SUBJECT-3< / strong>& nbsp;< TD>
< td width =10％align =centerstyle =border-bottom：0px none transparent;> 4553< / td>
< td width =20％align =centerstyle =border-bottom：0px none transparent;> 19 LT; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 49 LT; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< / tr>
< tr>
< td align =centerstyle =border-bottom：0px none transparent;>< strong> SUBJECT-4< / strong>& nbsp;< / td>
< td align =centerstyle =border-bottom：0px none transparent;> 4554< / td>
< td align =centerstyle =border-bottom：0px none transparent;> 14 LT; / TD>
< td align =centerstyle =border-bottom：0px none transparent;> 68 LT; / TD>
< td align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< / tr>
< tr>
< td align =centerstyle =border-bottom：0px none transparent;>< strong> SUBJECT-5< / strong>& nbsp;< / td>
< td align =centerstyle =border-bottom：0px none transparent;> 4555< / td>
< td align =centerstyle =border-bottom：0px none transparent;> 14 LT; / TD>
< td align =centerstyle =border-bottom：0px none transparent;> 36 LT; / TD>
< td align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< / tr>
< tr>
< td width =34％align =centerstyle =border-bottom：0px none transparent;>< strong> SUBJECT-6< / strong>& nbsp;< TD>
< td width =10％align =centerstyle =border-bottom：0px none transparent;> 4556< / td>
< td width =20％align =centerstyle =border-bottom：0px none transparent;> 19 LT; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 48 LT; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< / tr>< tr>
< td align =centerstyle =border-bottom：0px none transparent;>& nbsp;& nbsp;< / td>
< td align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< td align =centerstyle =border-bottom：0px none transparent;>& nbsp;& nbsp;< / td>
< td align =centerstyle =border-bottom：0px none transparent;>& nbsp;< strong>内部< / td>& nbsp;< / td>
< td width =18％align =centerstyle =border-bottom：0px none transparent;>< strong>实用< / td>& nbsp;< / td>
< / tr>
< tr>
< td width =34％align =centerstyle =border-bottom：0px none transparent;>< strong> PSUBJECT-1< / strong>& nbsp;< TD>
< td width =10％align =centerstyle =border-bottom：0px none transparent;> 4174< / td>
< td width =20％align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 29 LT; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 48< / td>
< / tr>
< tr>
< td width =34％align =centerstyle =border-bottom：0px none transparent;>< strong> PSUBJECT-2< / strong>& nbsp;< TD>
< td width =10％align =centerstyle =border-bottom：0px none transparent;> 4175< / td>
< td width =20％align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 16 LT; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 26< / td>
< / tr>
< tr>
< td width =20％align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 15℃; / TD>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 27< / td>
< / tr>
< tr>
< td align =centerstyle =border-bottom：0px none transparent;>< strong> PSUBJECT-4< / strong>& nbsp;< / td>
< td align =centerstyle =border-bottom：0px none transparent;> 4172< / td>
< td align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< td align =centerstyle =border-bottom：0px none transparent;> 17 LT; / TD>
< td align =centerstyle =border-bottom：0px none transparent;> 29< / td>
< / tr>
< tr>
< td align =centerstyle =border-bottom：0px none transparent;>< strong> PSUBJECT-5< / strong>& nbsp;< / td>
< td align =centerstyle =border-bottom：0px none transparent;> 4173< / td>
< td align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< td align =centerstyle =border-bottom：0px none transparent;> 29 LT; / TD>
< td align =centerstyle =border-bottom：0px none transparent;> 46< / td>
< / tr>
< tr>
< td width =34％align =centerstyle =border-bottom：0px none transparent;>< strong> Disipline（Deca）< / strong>& nbsp;<< ; / TD>
< td width =10％align =centerstyle =border-bottom：0px none transparent;> 4176< / td>
< td width =20％align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< td width =18％align =centerstyle =border-bottom：0px none transparent;>& nbsp;< / td>
< td width =18％align =centerstyle =border-bottom：0px none transparent;> 46< / td>
< / tr>
tr< td>& nbsp;< / td>< td>& nbsp;< / td>< td>& nbsp;< / td>< td> ;&安培; NBSP;< / TD>< TD>&安培; NBSP;< / TD>< / TR>< / tbody的>
< / table>
< br>< table width =783align =centercellpadding =5cellspacing =0class =table>
< tbody>< tr>
< td width =18％align =centervalign =top>< strong>实用标记< / strong>& nbsp;< / td>
< td width =18％align =centervalign =top> 328< / td>
< td width =19％align =centervalign =top>< strong> Theory Marks< / strong>& nbsp;< / td>
< td width =19％align =centervalign =top> 411< / td>
< / tr>
< tr>
< td width =18％align =center>< strong> Institute Code< / strong>& nbsp;< / td>
< td width =18％align =center> 1229< / td>
< td width =19％align =center>< strong> DECCA< / strong>& nbsp;< / td>
< td width =19％align =center> 4176< / td>
< / tr>
< tr>
< td width =18％align =center>< strong>分部< / strong>& nbsp;< / td>
< td width =18％align =center> PASS< / td>
< td width =19％align =center>< strong> Grand Total< / strong>& nbsp;< / td>
< td width =19％align =center> 739< / td>
< / tr>
< / tbody>< / table>
& nbsp;& nbsp;
<！ - Shashank Kumar Jain的Reformatter（CS，第III年，2010-11） - >
< div id =csscan-wrapperstyle =display：none;>< h2 id =csscan-header>元素< / h2>< ; table id =csscan-table>< tbody>< tr>< th colspan =2id =csscan-header-fontclass =csscan-header> Font< / th> < / tr>< tr id =csscan-row-font-family>< td id =csscan-property-font-familyclass =csscan-property> font-family< / td> ;< td id =csscan-value-font-familyclass =csscan-value>< / td>< / tr>< tr id =csscan-row-font-size> < td id =csscan-property-font-sizeclass =csscan-property> font-size< / td>< td id =csscan-value-font-sizeclass =csscan-value >< / td>< / tr>< tr id =csscan-row-font-style>< td id =csscan-property-font-styleclass =csscan-property > font-style< / td>< td id =csscan-value-font-styleclass =csscan-value>< / td>< / tr>< tr id =csscan- row-font-variant>< td id =csscan-property-font-variantclass =csscan-property> font-var >字母间距< / td>< td id =csscan-value-letter-spacingclass =csscan-value>< / td>< / tr>< tr id =csscan-row-line-height>< td id =csscan-property-line-heightclass =csscan-property> line-height< / td>< td id =csscan- value-line-heightclass =csscan-value>< / td>< / tr>< tr id =csscan-row-text-decoration>< td id =csscan-property -text-decorationclass =csscan-property> text-decoration< / td>< td id =csscan-value-text-decorationclass =csscan-value>< / td><< ; / tr>< tr id =csscan-row-text-align >< td id =csscan-property-text-alignclass =csscan-property> text-align< / td>< td id =csscan-value-text-alignclass =csscan < / td>< / tr>< tr id =csscan-row-text-indent>< td id =csscan-property-text-indentclass =csscan-属性>文字缩进< / td>< td id =csscan-value-text-indentclass =csscan-value>< / td>< / tr>< tr id = csscan-text-transform>< td id =csscan-property-text-transformclass =csscan-property> text-transform< / td>< td id = text-transformclass =csscan-value>< / td>< / tr>< tr id =csscan-row-white-space>< td id =csscan-property-white -spaceclass =csscan-property> white-space< / td>< td id =csscan-value-white-spaceclass =csscan-value>< / td>< tr>< tr id =csscan-row-word-spacing>< td id =csscan-property-word-spacingclass =csscan-property> word-spacing< / td>< td id =csscan-value-word-spacingclass =csscan-val ue>< / td>< / tr>< tr id =csscan-row-color>< td id =csscan-property-colorclass =csscan-property> color< ; / td>< td id =csscan-value-colorclass =csscan-value>< / td>< / tr>< tr>< th colspan =2 csscan-header-backgroundclass =csscan-header>背景< / th>< / tr>< tr id =csscan-row-background-attachment>< td id =csscan-property -background-attachmentclass =csscan-property> bg-attachment< / td>< td id =csscan-value-background-attachmentclass =csscan-value>< / td><< ; / tr>< tr id =csscan-row-background-color>< td id =csscan-property-background-colorclass =csscan-property> bg-color< / td> < td id =csscan-value-background-colorclass =csscan-value>< / td>< / tr>< tr id =csscan-row-background-image><<< ; td id =csscan-property-background-imageclass =csscan-property> bg-image< / td>< td id =csscan-value-background-imageclass =csscan-value >< / td>< / tr>< tr id =csscan-row-background-position>< td id =csscan-property-background-positionclass =csscan-property> bg-position< / td>< td id =csscan-value-background-positionclass =csscan-value>< / td>< / tr>< tr id = >< td id =csscan-property-background-repeatclass =csscan-property> bg-repeat< / td>< td id =csscan-value-background-repeatclass =csscan < th colspan =2id =csscan-header-sizeclass =csscan-header> Box< / th>< / td>< / tr>< < / tr>< tr id =csscan-row-width>< td id =csscan-property-widthclass =csscan-property> width< / td>< td id = csscan-value-widthclass =csscan-value>< / td>< / tr>< tr id =csscan-row-height>< td id =csscan-property- heightclass =csscan-property> height< / td>< td id =csscan-value-heightclass =csscan-value>< / td>< / tr>< tr ID = CSSCAN行边界顶 >< TD id =csscan-property-border-topclass =csscan-property> border-top< / td>< td id =csscan-value-border-topclass =csscan-value> < / td>< / tr>< tr id =csscan-row-border-right>< td id =csscan-property-border-rightclass =csscan-property> border -right< / td>< td id =csscan-value-border-rightclass =csscan-value>< / td>< / tr>< tr id = -bottom>>< td id =csscan-property-border-bottomclass =csscan-property> border-bottom< / td>< td id =csscan-value-border-bottomclass =csscan-value>< / td>< / tr>< tr id =csscan-row-border-left>< td id =csscan-property-border-left csscan-property> border-left< / td>< td id =csscan-value-border-leftclass =csscan-value>< / td>< / tr>< tr id =csscan-row-margin>< td id =csscan-property-marginclass =csscan-property> margin< / td>< td id =csscan-value-marginclass = CSSCAN值 >< / TD>< / TR>< TR id =csscan-row-padding>< td id =csscan-property-paddingclass =csscan-property> padding< / td>< td id =csscan-value-paddingclass =csscan-value>< / td>< / tr>< tr id =csscan-row-max-height>< td id =csscan-property-max-height csscan-property> max-height< / td>< td id =csscan-value-max-heightclass =csscan-value>< / td>< / tr>< tr id =csscan-row-min-height>< td id =csscan-property-min-heightclass =csscan-property> min-height< / td>< td id =csscan < / td>< / tr>< tr id =csscan-row-max-width>< td id =csscan- property-max-widthclass =csscan-property> max-width< / td>< td id =csscan-value-max-widthclass =csscan-value>< / td> < / tr>< tr id =csscan-row-min-width>< td id =csscan-property-min-widthclass =csscan-property> min-width< / td> ;< td id =csscan-value-min-widthclass =csscan-value>< / td>< / tr >< tr id =csscan-row-outline-color>< td id =csscan-property-outline-colorclass =csscan-property> outline-color< / td>< td id =csscan-value-outline-colorclass =csscan-value>< / td>< / tr>< tr id =csscan-row-outline-style>< td id =csscan-property-outline-styleclass =csscan-property> outline-style< / td>< td id =csscan-value-outline-styleclass =csscan-value> < / td>< / tr>< tr id =csscan-row-outline-width>< td id =csscan-property-outline-widthclass =csscan-property> outline < / td>< td id =csscan-value-outline-widthclass =csscan-value>< / td>< th colspan =2 id =csscan-header-positionclass =csscan-header>定位< / th>< / tr>< tr id =csscan-row-position>< td id =csscan < / td>< / tr> < tr id =csscan-row-top> ;< td id =csscan-property-topclass =csscan-property> top< / td>< td id =csscan-value-topclass =csscan-value>< / td>< / tr>< tr id =csscan-row-bottom>< td id =csscan-property-bottomclass =csscan-property> bottom< / td>< td id =csscan-value-bottomclass =csscan-value>< / td>< / tr>< tr id =csscan-row-right>< td id =csscan -property-rightclass =csscan-property> right< / td>< td id =csscan-value-rightclass =csscan-value>< / td>< / tr> < tr id =csscan-row-left>< td id =csscan-property-leftclass =csscan-property> left< / td>< td id = leftclass =csscan-value>< / td>< / tr>< tr id =csscan-row-float>< td id =csscan-property-float csscan-property>> float< / td>< td id =csscan-value-floatclass =csscan-value>< / td>< / tr>< tr id = row-display>< td id =csscan-property-displayclass =csscan-property> display< ; / td>< td id =csscan-value-displayclass =csscan-value>< / td>< / tr>< tr id =csscan-row-clear><< ; td id =csscan-property-clearclass =csscan-property> clear< / td>< td id =csscan-value-clearclass =csscan-value>< / td> ;< / tr>< tr id =csscan-row-z-index>< td id =csscan-property-z-indexclass =csscan-property> z-index< td>< t>< th>< th>< th colspan =2id =>< td id =csscan-value-z- indexclass =csscan-value>< / td> csscan-header-listclass =csscan-header> List< / th>< / tr>< tr id =csscan-row-list-style-image>< td id =csscan -property-list-style-imageclass =csscan-property> list-style-image< / td>< td id =csscan-value-list-style-imageclass =csscan-value >< / td>< / tr>< tr id =csscan-row-list-style-type>< td id =csscan-property-list-style-typeclass =csscan -property> list-style-type< / td>< td id =csscan-value-list-style-typeclass =csscan-value >< / td>< / tr>< tr id =csscan-row-list-style-position>< td id =csscan-property-list-style-positionclass = csscan-property> list-style-position< / td>< td id =csscan-value-list-style-positionclass =csscan-value>< / td>< / tr> < th>< th colspan =2id =csscan-header-tableclass =csscan-header>表< tr>< tr id = vertical-align>< td id =csscan-property-vertical-alignclass =csscan-property> vertical-align< / td>< td id = class =csscan-value>< / td>< / tr>< tr id =csscan-row-border-collapse>< td id =csscan-property-border-collapseclass =csscan-property> border-collapse< / td>< td id =csscan-value-border-collapseclass =csscan-value>< / td>< / tr>< tr id =csscan-row-border-spacing>< td id =csscan-property-border-spacingclass =csscan-property> border-spacing< / td>< td id = csscan-value-border-spacingc lass =csscan-value>< / td>< / tr>< tr id =csscan-row-caption-side>< td id =csscan-property-caption-sideclass =csscan-property> caption-side< / td>< td id =csscan-value-caption-sideclass =csscan-value>< / td>< / tr>< tr id =csscan-row-empty-cells>< td id =csscan-property-empty-cellsclass =csscan-property> empty-cells< / td>< td id = csscan-value-empty-cellsclass =csscan-value>< / td>< / tr>< tr id =csscan-row-table-layout>< td id =csscan < / td>< / td>< ;< / tr>< tr>< th colspan =2id =csscan-header-effectsclass =csscan-header>效果< / th>< / tr>< tr id =csscan-row-text-shadow>< td id =csscan-property-text-shadowclass =csscan-property> text-shadow< / td>< td id =csscan- value-text-shadowclass =csscan-value>< / td>< / tr& >< tr id =csscan-row - webkit-box-shadow>< td id =csscan-property - webkit-box-shadowclass =csscan-property> -webkit- box-shadow< / td>< td id =csscan-value - webkit-box-shadowclass =csscan-value>< / td>< / tr>< tr id =csscan -row-border-radius>< td id =csscan-property-border-radiusclass =csscan-property> border-radius< / td>< td id =csscan-value-border -radiusclass =csscan-value>< / td>< / tr>< th> th colspan =2id =csscan-header-otherclass =csscan-header >其他< / th>< / tr>< tr id =csscan-row-overflow>< td id =csscan-property-overflowclass =csscan-property> overflow< td>< td id =csscan-value-overflowclass =csscan-value>< / td>< / tr>< tr id =csscan-row-cursor>< td id =csscan-property-cursorclass =csscan-property> cursor< / td>< td id =csscan-value-cursorclass =csscan-value>< / td><<< ; / tr>< tr id =csscan-row-visibility>< td id = csscan-property-visibilityclass =csscan-property> visibility< / td>< td id =csscan-value-visibilityclass =csscan-value>< / td>< TR>< / tbody的>< /表>< / DIV>< /体>< / HTML>
上面的 XPath 是正确的，因为我有用 FirePath 检查它。谁能告诉我我做错了什么？
我的原始代码看起来像
$ xpath = new DOMXPath（$ page）;
..
...
...
$ page-> loadHTML（$ content）;
..
...
$ totalPath =// body / table [3] / tbody / tr [1] / td [4];
$ total = $ xpath-> query（$ totalPath）;
...
...
上面发生的是<$因为 html 仍未加载到 Dom 中，所以c $ c> $ xpath code>。所以当xpath运行任何查询时，它会在空白文档上运行查询。
现在我改变了2条语句的顺序。
...
...
$ page-> loadHTML（$ content）;
$ xpath = new DOMXPath（$ page）;
...
...
$ totalPath =// body / table [3] / tbody / tr [1] / td [4];
$ total = $ xpath-> query（$ totalPath）;
现在它可以工作，因为创建了 $ xpath 在非空文件上
I have a code that reads an HTML file from my local web server localhost and then converts it to XHTML with tidy. Then i load that XHTML into my DOM. the code looks like this
<?php
function getXHTML($html)
{
$options = array("output-html" => true,"quote-nbsp" => true, "drop-proprietary-attributes" => true,"drop-font-tags" => true,"drop-empty-paras" => true,"hide-comments" => true);
$tidy=new tidy();
$xhtml=$tidy->repairString($html,$options);
echo $xhtml;
return $xhtml;
}
$content = file_get_contents("http://localhost/filename.htm");
$page = new DOMDocument();
$xpath=new DOMXPath($page);
$content = getXHTML($content); // this is a tidy function to return XHTML
$page->loadHTML($content);
$totalPath = "//body/table[3]/tbody/tr[1]/td[4]";
$total = $xpath->query($totalPath);
echo $total->length; // this shows zero
?>
the contents of filename.htm looks like this
<!-- saved from url=(0041)http://www.rtu.ac.in/results/reformat.php -->
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="SHORTCUT ICON" href="http://www.rtu.ac.in/favicon.ico">
<link href="./Result - Rajasthan Technical University6_files/styleresults.css" rel="stylesheet" type="text/css">
<title>Result - Rajasthan Technical University</title>
</head>
<body>
<table width="773" cellpadding="5" cellspacing="0" align="center">
<tbody><tr height="60">
<td width="16%" height="60" valign="top"><font color="brown" size="+2"><img src="./Result - Rajasthan Technical University6_files/logo.jpg" width="100" height="102" border="0" align="right"> </font></td>
<td width="72%" height="60" align="center" valign="top"><p><font color="brown" size="+2"><strong>RAJASTHAN TECHNICAL UNIVERSITY </strong></font></p><font color="brown" size="+2">
<p><font size="+1"><strong>B.Tech -IVth SEMESTER -2010(Main) 16.5.2011</strong></font></p><font size="+1"> </font></font></td>
<td width="12%" height="80"><strong>www.rtu.ac.in</strong> </td>
</tr>
</tbody></table>
<br>
<br>
<table width="783" align="center" cellpadding="5" cellspacing="0" class="table">
<tbody>
<tr>
<td width="34%" align="center" valign="top" rowspan="2"><strong>Subject(s) Name </strong> </td>
<td width="10%" align="center" valign="top" colspan="1" rowspan="2"> <strong>Subject(s) Code </strong> </td>
<td align="center" valign="top" colspan="3" rowspan="1"><strong>Marks Obtained </strong> </td>
</tr>
<tr>
<td width="20%" align="center"><strong>Internal</strong> </td>
<td width="18%" align="center"><strong>Theory</strong> </td>
<td width="18%" align="center"> </td>
</tr>
<tr>
<td width="34%" align="center" style=" border-bottom: 0px none transparent;"><strong>SUBJECT-1</strong> </td>
<td width="10%" align="center" style=" border-bottom: 0px none transparent;">4551</td>
<td width="20%" align="center" style=" border-bottom: 0px none transparent;"> 16</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> 50</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> </td>
</tr>
<tr>
<td width="34%" align="center" style=" border-bottom: 0px none transparent;"><strong>SUBJECT-2</strong> </td>
<td width="10%" align="center" style=" border-bottom: 0px none transparent;"> 4552</td>
<td width="20%" align="center" style=" border-bottom: 0px none transparent;"> 17</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> 61</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> </td>
</tr>
<tr>
<td width="34%" align="center" style=" border-bottom: 0px none transparent;"><strong>SUBJECT-3</strong> </td>
<td width="10%" align="center" style=" border-bottom: 0px none transparent;">4553</td>
<td width="20%" align="center" style=" border-bottom: 0px none transparent;"> 19</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> 49</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> </td>
</tr>
<tr>
<td align="center" style=" border-bottom: 0px none transparent;"><strong>SUBJECT-4</strong> </td>
<td align="center" style=" border-bottom: 0px none transparent;">4554</td>
<td align="center" style=" border-bottom: 0px none transparent;"> 14</td>
<td align="center" style=" border-bottom: 0px none transparent;"> 68</td>
<td align="center" style=" border-bottom: 0px none transparent;"> </td>
</tr>
<tr>
<td align="center" style=" border-bottom: 0px none transparent;"><strong>SUBJECT-5</strong> </td>
<td align="center" style=" border-bottom: 0px none transparent;">4555</td>
<td align="center" style=" border-bottom: 0px none transparent;"> 14</td>
<td align="center" style=" border-bottom: 0px none transparent;"> 36</td>
<td align="center" style=" border-bottom: 0px none transparent;"> </td>
</tr>
<tr>
<td width="34%" align="center" style=" border-bottom: 0px none transparent;"><strong>SUBJECT-6</strong> </td>
<td width="10%" align="center" style=" border-bottom: 0px none transparent;">4556</td>
<td width="20%" align="center" style=" border-bottom: 0px none transparent;"> 19</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> 48</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> </td>
</tr><tr>
<td align="center" style=" border-bottom: 0px none transparent;"> </td>
<td align="center" style=" border-bottom: 0px none transparent;"> </td>
<td align="center" style=" border-bottom: 0px none transparent;"> </td>
<td align="center" style=" border-bottom: 0px none transparent;"> <strong>Internal</strong> </td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"><strong>Practical</strong> </td>
</tr>
<tr>
<td width="34%" align="center" style=" border-bottom: 0px none transparent;"><strong>PSUBJECT-1</strong> </td>
<td width="10%" align="center" style=" border-bottom: 0px none transparent;">4174</td>
<td width="20%" align="center" style=" border-bottom: 0px none transparent;"> </td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> 29</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;">48</td>
</tr>
<tr>
<td width="34%" align="center" style=" border-bottom: 0px none transparent;"><strong>PSUBJECT-2</strong> </td>
<td width="10%" align="center" style=" border-bottom: 0px none transparent;">4175</td>
<td width="20%" align="center" style=" border-bottom: 0px none transparent;"> </td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> 16</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;">26</td>
</tr>
<tr>
<td width="34%" align="center" style=" border-bottom: 0px none transparent;"><strong>PSUBJECT-3</strong> </td>
<td width="10%" align="center" style=" border-bottom: 0px none transparent;">4171</td>
<td width="20%" align="center" style=" border-bottom: 0px none transparent;"> </td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> 15</td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;">27</td>
</tr>
<tr>
<td align="center" style=" border-bottom: 0px none transparent;"><strong>PSUBJECT-4</strong> </td>
<td align="center" style=" border-bottom: 0px none transparent;">4172</td>
<td align="center" style=" border-bottom: 0px none transparent;"> </td>
<td align="center" style=" border-bottom: 0px none transparent;"> 17</td>
<td align="center" style=" border-bottom: 0px none transparent;">29</td>
</tr>
<tr>
<td align="center" style=" border-bottom: 0px none transparent;"><strong>PSUBJECT-5</strong> </td>
<td align="center" style=" border-bottom: 0px none transparent;">4173</td>
<td align="center" style=" border-bottom: 0px none transparent;"> </td>
<td align="center" style=" border-bottom: 0px none transparent;"> 29</td>
<td align="center" style=" border-bottom: 0px none transparent;">46</td>
</tr>
<tr>
<td width="34%" align="center" style=" border-bottom: 0px none transparent;"><strong>Disipline (Deca)</strong> </td>
<td width="10%" align="center" style=" border-bottom: 0px none transparent;">4176</td>
<td width="20%" align="center" style=" border-bottom: 0px none transparent;"> </td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;"> </td>
<td width="18%" align="center" style=" border-bottom: 0px none transparent;">46</td>
</tr>
<tr><td> </td><td> </td><td> </td><td> </td><td> </td></tr></tbody>
</table>
<br><table width="783" align="center" cellpadding="5" cellspacing="0" class="table">
<tbody><tr>
<td width="18%" align="center" valign="top"><strong>Practical Marks </strong> </td>
<td width="18%" align="center" valign="top">328</td>
<td width="19%" align="center" valign="top"><strong>Theory Marks </strong> </td>
<td width="19%" align="center" valign="top">411</td>
</tr>
<tr>
<td width="18%" align="center"><strong>Institute Code </strong> </td>
<td width="18%" align="center"> 1229 </td>
<td width="19%" align="center"><strong>DECCA </strong> </td>
<td width="19%" align="center">4176</td>
</tr>
<tr>
<td width="18%" align="center"><strong>Division </strong> </td>
<td width="18%" align="center"> PASS </td>
<td width="19%" align="center"><strong>Grand Total </strong> </td>
<td width="19%" align="center">739</td>
</tr>
</tbody></table>
<!-- Reformatter by Shashank Kumar Jain (CS, IIIrd Year, 2010-11) -->
<div id="csscan-wrapper" style="display: none; "><h2 id="csscan-header">element</h2><table id="csscan-table"><tbody><tr><th colspan="2" id="csscan-header-font" class="csscan-header">Font</th></tr><tr id="csscan-row-font-family"><td id="csscan-property-font-family" class="csscan-property">font-family</td><td id="csscan-value-font-family" class="csscan-value"></td></tr><tr id="csscan-row-font-size"><td id="csscan-property-font-size" class="csscan-property">font-size</td><td id="csscan-value-font-size" class="csscan-value"></td></tr><tr id="csscan-row-font-style"><td id="csscan-property-font-style" class="csscan-property">font-style</td><td id="csscan-value-font-style" class="csscan-value"></td></tr><tr id="csscan-row-font-variant"><td id="csscan-property-font-variant" class="csscan-property">font-variant</td><td id="csscan-value-font-variant" class="csscan-value"></td></tr><tr id="csscan-row-font-weight"><td id="csscan-property-font-weight" class="csscan-property">font-weight</td><td id="csscan-value-font-weight" class="csscan-value"></td></tr><tr id="csscan-row-letter-spacing"><td id="csscan-property-letter-spacing" class="csscan-property">letter-spacing</td><td id="csscan-value-letter-spacing" class="csscan-value"></td></tr><tr id="csscan-row-line-height"><td id="csscan-property-line-height" class="csscan-property">line-height</td><td id="csscan-value-line-height" class="csscan-value"></td></tr><tr id="csscan-row-text-decoration"><td id="csscan-property-text-decoration" class="csscan-property">text-decoration</td><td id="csscan-value-text-decoration" class="csscan-value"></td></tr><tr id="csscan-row-text-align"><td id="csscan-property-text-align" class="csscan-property">text-align</td><td id="csscan-value-text-align" class="csscan-value"></td></tr><tr id="csscan-row-text-indent"><td id="csscan-property-text-indent" class="csscan-property">text-indent</td><td id="csscan-value-text-indent" class="csscan-value"></td></tr><tr id="csscan-row-text-transform"><td id="csscan-property-text-transform" class="csscan-property">text-transform</td><td id="csscan-value-text-transform" class="csscan-value"></td></tr><tr id="csscan-row-white-space"><td id="csscan-property-white-space" class="csscan-property">white-space</td><td id="csscan-value-white-space" class="csscan-value"></td></tr><tr id="csscan-row-word-spacing"><td id="csscan-property-word-spacing" class="csscan-property">word-spacing</td><td id="csscan-value-word-spacing" class="csscan-value"></td></tr><tr id="csscan-row-color"><td id="csscan-property-color" class="csscan-property">color</td><td id="csscan-value-color" class="csscan-value"></td></tr><tr><th colspan="2" id="csscan-header-background" class="csscan-header">Background</th></tr><tr id="csscan-row-background-attachment"><td id="csscan-property-background-attachment" class="csscan-property">bg-attachment</td><td id="csscan-value-background-attachment" class="csscan-value"></td></tr><tr id="csscan-row-background-color"><td id="csscan-property-background-color" class="csscan-property">bg-color</td><td id="csscan-value-background-color" class="csscan-value"></td></tr><tr id="csscan-row-background-image"><td id="csscan-property-background-image" class="csscan-property">bg-image</td><td id="csscan-value-background-image" class="csscan-value"></td></tr><tr id="csscan-row-background-position"><td id="csscan-property-background-position" class="csscan-property">bg-position</td><td id="csscan-value-background-position" class="csscan-value"></td></tr><tr id="csscan-row-background-repeat"><td id="csscan-property-background-repeat" class="csscan-property">bg-repeat</td><td id="csscan-value-background-repeat" class="csscan-value"></td></tr><tr><th colspan="2" id="csscan-header-size" class="csscan-header">Box</th></tr><tr id="csscan-row-width"><td id="csscan-property-width" class="csscan-property">width</td><td id="csscan-value-width" class="csscan-value"></td></tr><tr id="csscan-row-height"><td id="csscan-property-height" class="csscan-property">height</td><td id="csscan-value-height" class="csscan-value"></td></tr><tr id="csscan-row-border-top"><td id="csscan-property-border-top" class="csscan-property">border-top</td><td id="csscan-value-border-top" class="csscan-value"></td></tr><tr id="csscan-row-border-right"><td id="csscan-property-border-right" class="csscan-property">border-right</td><td id="csscan-value-border-right" class="csscan-value"></td></tr><tr id="csscan-row-border-bottom"><td id="csscan-property-border-bottom" class="csscan-property">border-bottom</td><td id="csscan-value-border-bottom" class="csscan-value"></td></tr><tr id="csscan-row-border-left"><td id="csscan-property-border-left" class="csscan-property">border-left</td><td id="csscan-value-border-left" class="csscan-value"></td></tr><tr id="csscan-row-margin"><td id="csscan-property-margin" class="csscan-property">margin</td><td id="csscan-value-margin" class="csscan-value"></td></tr><tr id="csscan-row-padding"><td id="csscan-property-padding" class="csscan-property">padding</td><td id="csscan-value-padding" class="csscan-value"></td></tr><tr id="csscan-row-max-height"><td id="csscan-property-max-height" class="csscan-property">max-height</td><td id="csscan-value-max-height" class="csscan-value"></td></tr><tr id="csscan-row-min-height"><td id="csscan-property-min-height" class="csscan-property">min-height</td><td id="csscan-value-min-height" class="csscan-value"></td></tr><tr id="csscan-row-max-width"><td id="csscan-property-max-width" class="csscan-property">max-width</td><td id="csscan-value-max-width" class="csscan-value"></td></tr><tr id="csscan-row-min-width"><td id="csscan-property-min-width" class="csscan-property">min-width</td><td id="csscan-value-min-width" class="csscan-value"></td></tr><tr id="csscan-row-outline-color"><td id="csscan-property-outline-color" class="csscan-property">outline-color</td><td id="csscan-value-outline-color" class="csscan-value"></td></tr><tr id="csscan-row-outline-style"><td id="csscan-property-outline-style" class="csscan-property">outline-style</td><td id="csscan-value-outline-style" class="csscan-value"></td></tr><tr id="csscan-row-outline-width"><td id="csscan-property-outline-width" class="csscan-property">outline-width</td><td id="csscan-value-outline-width" class="csscan-value"></td></tr><tr><th colspan="2" id="csscan-header-position" class="csscan-header">Positioning</th></tr><tr id="csscan-row-position"><td id="csscan-property-position" class="csscan-property">position</td><td id="csscan-value-position" class="csscan-value"></td></tr><tr id="csscan-row-top"><td id="csscan-property-top" class="csscan-property">top</td><td id="csscan-value-top" class="csscan-value"></td></tr><tr id="csscan-row-bottom"><td id="csscan-property-bottom" class="csscan-property">bottom</td><td id="csscan-value-bottom" class="csscan-value"></td></tr><tr id="csscan-row-right"><td id="csscan-property-right" class="csscan-property">right</td><td id="csscan-value-right" class="csscan-value"></td></tr><tr id="csscan-row-left"><td id="csscan-property-left" class="csscan-property">left</td><td id="csscan-value-left" class="csscan-value"></td></tr><tr id="csscan-row-float"><td id="csscan-property-float" class="csscan-property">float</td><td id="csscan-value-float" class="csscan-value"></td></tr><tr id="csscan-row-display"><td id="csscan-property-display" class="csscan-property">display</td><td id="csscan-value-display" class="csscan-value"></td></tr><tr id="csscan-row-clear"><td id="csscan-property-clear" class="csscan-property">clear</td><td id="csscan-value-clear" class="csscan-value"></td></tr><tr id="csscan-row-z-index"><td id="csscan-property-z-index" class="csscan-property">z-index</td><td id="csscan-value-z-index" class="csscan-value"></td></tr><tr><th colspan="2" id="csscan-header-list" class="csscan-header">List</th></tr><tr id="csscan-row-list-style-image"><td id="csscan-property-list-style-image" class="csscan-property">list-style-image</td><td id="csscan-value-list-style-image" class="csscan-value"></td></tr><tr id="csscan-row-list-style-type"><td id="csscan-property-list-style-type" class="csscan-property">list-style-type</td><td id="csscan-value-list-style-type" class="csscan-value"></td></tr><tr id="csscan-row-list-style-position"><td id="csscan-property-list-style-position" class="csscan-property">list-style-position</td><td id="csscan-value-list-style-position" class="csscan-value"></td></tr><tr><th colspan="2" id="csscan-header-table" class="csscan-header">Table</th></tr><tr id="csscan-row-vertical-align"><td id="csscan-property-vertical-align" class="csscan-property">vertical-align</td><td id="csscan-value-vertical-align" class="csscan-value"></td></tr><tr id="csscan-row-border-collapse"><td id="csscan-property-border-collapse" class="csscan-property">border-collapse</td><td id="csscan-value-border-collapse" class="csscan-value"></td></tr><tr id="csscan-row-border-spacing"><td id="csscan-property-border-spacing" class="csscan-property">border-spacing</td><td id="csscan-value-border-spacing" class="csscan-value"></td></tr><tr id="csscan-row-caption-side"><td id="csscan-property-caption-side" class="csscan-property">caption-side</td><td id="csscan-value-caption-side" class="csscan-value"></td></tr><tr id="csscan-row-empty-cells"><td id="csscan-property-empty-cells" class="csscan-property">empty-cells</td><td id="csscan-value-empty-cells" class="csscan-value"></td></tr><tr id="csscan-row-table-layout"><td id="csscan-property-table-layout" class="csscan-property">table-layout</td><td id="csscan-value-table-layout" class="csscan-value"></td></tr><tr><th colspan="2" id="csscan-header-effects" class="csscan-header">Effects</th></tr><tr id="csscan-row-text-shadow"><td id="csscan-property-text-shadow" class="csscan-property">text-shadow</td><td id="csscan-value-text-shadow" class="csscan-value"></td></tr><tr id="csscan-row--webkit-box-shadow"><td id="csscan-property--webkit-box-shadow" class="csscan-property">-webkit-box-shadow</td><td id="csscan-value--webkit-box-shadow" class="csscan-value"></td></tr><tr id="csscan-row-border-radius"><td id="csscan-property-border-radius" class="csscan-property">border-radius</td><td id="csscan-value-border-radius" class="csscan-value"></td></tr><tr><th colspan="2" id="csscan-header-other" class="csscan-header">Other</th></tr><tr id="csscan-row-overflow"><td id="csscan-property-overflow" class="csscan-property">overflow</td><td id="csscan-value-overflow" class="csscan-value"></td></tr><tr id="csscan-row-cursor"><td id="csscan-property-cursor" class="csscan-property">cursor</td><td id="csscan-value-cursor" class="csscan-value"></td></tr><tr id="csscan-row-visibility"><td id="csscan-property-visibility" class="csscan-property">visibility</td><td id="csscan-value-visibility" class="csscan-value"></td></tr></tbody></table></div></body></html>
the XPath above is correct as i have checked it with FirePath. can anyone tell me what i am doing wrong?
解决方案 the answer to the above question somewhat tricky. my original code looked something like
$xpath=new DOMXPath($page);
..
...
...
$page->loadHTML($content);
..
...
$totalPath = "//body/table[3]/tbody/tr[1]/td[4]";
$total = $xpath->query($totalPath);
...
...
what happens above is that $xpath is created on an empty document because the html is still not loaded in the Dom. so when xpath ran any query it ran the query on an empty document.
now i changed the order of the 2 statements
...
...
$page->loadHTML($content);
$xpath=new DOMXPath($page);
...
...
$totalPath = "//body/table[3]/tbody/tr[1]/td[4]";
$total = $xpath->query($totalPath);
now it works because $xpath is created on a nonempty document
这篇关于XPATH无法在HTML上工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
登录
关闭
扫码关注1秒登录
发送“验证码”获取
|
15天全站免登陆