Similar question might be asked many times but I have a bit complex one.
I know when we want to parse only the text between </code> tag in this scenario,<br /></p><br/><br/><pre><code><title>My work
This is my work.
Learning regex.
we can form a Regex like this:
>([^<]*)<
Source
But that works only because the </code> tag is on the top. But if the tag is the second one, it won't work.<br />Okay, my scenario is, <br /></p><br/><br/><pre><code><td class="td1" headers="searchth1">JAVA1</td><br/><td class="td2" headers="searchth2">JAVA2</td><br/><td class="td3" headers="searchth3">JAVA3</td><br/><br/><br/><td class="td1" headers="searchth1">PHP1</td><br/><td class="td2" headers="searchth2">PHP2</td><br/><td class="td3" headers="searchth3">PHP3</td><br/></code></pre><br/><br/><p>There are many similar tags in the file, and I want to retrieve only the text between <code><td class="td1" headers="searchth1"></code> and <code></td></code> tags.<br />And, I've used <code>'#<td class="td1" headers="searchth1">(.*)</td>#'</code> , which is working fine. But it is also including all other <code><td></code> tags in the output, which I don't want.<br />I want only the texts <code>Java1</code> and <code>PHP1</code> and I guess if I could able to retrieve the text between the tags by excluding the tags, I may acieve it. <br />Am I correct? or Wrong? If so, how to achieve what I want?<br />Thanks in advance!! </p><br/> </div><div class="post-text" itemprop="text"> <div style="font-weight: bold;"><p class="normal">Answer</p> <br/></div><br/><p>I think your regex approach, while technically possible, is going to cause more trouble down the line. For example, if the source HTML changed so the <code>headers</code> attribute appeared before the <code>class</code> attribute the regex would fail. Also, your code will become pretty unreadable very quickly if you're using regex to search through HTML source code.</p><br/><br/><br/><p>To parse HTML you should use PHP's DOMDocument functions, which are more robust in the face of changing HTML code and are far more readable to whoever may be maintaining your code (including you). This method will also support looking at other element attributes more easily. The sample code below should work for your use case:</p><br/><br/><pre><code>$doc = '<td class="td1" headers="searchth1">JAVA1</td><br/><td class="td2" headers="searchth2">JAVA2</td><br/><td class="td3" headers="searchth3">JAVA3</td><br/><td class="td1" headers="searchth1">PHP1</td><br/><td class="td2" headers="searchth2">PHP2</td><br/><td class="td3" headers="searchth3">PHP3</td>';<br/>$dom = new DOMDocument();<br/>$dom->loadHTML($doc);<br/><br/>$xpath = new DOMXpath($dom);<br/>$tds = $xpath->query("//td[@class='td1']");<br/>// the query could also be "//td[@headers='searchth1']" or even<br/>// "//td[@headers='searchth1'][@class='td1']" depending on what you want to target<br/>foreach($tds as $td){<br/> var_dump($td->nodeValue);<br/>}<br/></code></pre><br/><br/><p>If you want to learn more about building and using xpath queries, I suggest the article <a href="http://www.sitepoint.com/php-dom-using-xpath/" rel="nofollow">PHP DOM: Using XPath</a> over at SitePoint.com.</p><br/><br/> </div>
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