Preg_match在div标签中获取div标签中的内容

Question

I want to extract all contents of div tag with the class viewContent but the problem when I executing the my code the php stop when reach the first closing tag of div. What should I do guys?. I have my sample code below but still only the first div tags get. Thank you guys for helping me.

  preg_match_all('#<div class="viewContent"[^>]*>(.*?)</div[^>]*>#is', $content, $s);
    print_r($s);

Answer 1

The lazy or greedy search is of little use here because it's bound to match </div> which is not corresponding to <div class="viewContent"> . So the end comment can be of use here as it logically marks the end of desired division.

Using following regex only the contents of <div class="viewControl"> can be obtained.

Regex: <div class="viewContent"[^>]*>(.*?)<\\/div[^>]*>(?=<!--viewContent-->)

Explanation:

• <div class="viewContent"[^>]*>(.*?)<\\/div[^>]*> This matches the division with lazy search.

• (?=<!--viewContent-->) This positively looks ahead for comment which marks logically the end of <div>

Regex101 Demo

Answer 2

If you can guarantee that the closing tag for the div you want ends with <!--viewContent--> , you can use:

<div class="viewContent"[^>]*>(.*?)</div[^>]*><!--viewContent-->

Otherwise, you might just want to use an HTML parser.

Answer 3

You can use PHPs built in DOMDocument class to parse the html of the page and use the DOMXPath class to extract the value of an HTML element with a certain HTML class:

<?php
$html = '';//HTML goes here
$doc = new DOMDocument();
@$doc->loadHTML($html);
$classname = "viewContent";
$finder = new DomXPath($doc);
$spanner = $finder->query("//*[contains(@class, '$classname')]");
foreach ($spanner as $entry) {
  echo $entry->nodeValue;
}