this is my input :
<div class="entry-content">
<p> Hey ! </p>
<h2> How Are You ?! </h2>
</div><!-- .entry-content -->
and this is my RegEx !
"<div class=\"entry-content\">(.*?)</div><!-- .entry-content -->"
this work when there is no line between <div> tag like this
<div class="entry-content"> Hey ! </div><!-- .entry-content -->
But i need actually everything even new line other html tags and etc.
You should use XML Parsing framework like DOM to parse XML documents (including HTML), but if you really need to use regex (assuming PCRE) there's an s PCRE modifier:
s (PCRE_DOTALL)If this modifier is set, a dot metacharacter in the pattern matches all characters, including newlines. Without it, newlines are excluded. This modifier is equivalent to Perl's /s modifier. A negative class such as [^a] always matches a newline character, independent of the setting of this modifier.
So you may write:
$matches = array();
preg_match_all("~<div class=\"entry-content\">(.*?)</div><!-- \\.entry-content -->~s",
$text, $matches);
BTW: Here's an example for you how to use DOM to fetch elements based on their class name.
Use the right tool for the job instead of trying to parse this using a regular expression.
$html = <<<DATA
<div class="entry-content">
Hey !
How Are You ?!
</div><!-- .entry-content -->
DATA;
$dom = new DOMDocument;
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$node = $xpath->query('//div[@class="entry-content"]');
echo $node->item(0)->nodeValue;
Output
Hey !
How Are You ?!
