How to insert line of php code in html file, using SimpleHtmlDOM

I'm trying to insert THE PHP CODE between the <div id="con开发者_运维技巧tainer"> THE PHP CODE HERE </div> . I'm using the http://simplehtmldom.sourceforge.net/ in this Php Html Parser.

I've got this so far, how to find a div having an id called container:

// Find all which attribute id=foo

$ret = $html->find('div[id=foo]');

Then after finding the foo, what's next?

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$html->find('div[id=foo]')->innertext = 'bar';

Should do the job but you might be better off modifying the DOM with JS?

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Why not modify the source Wordpress template instead of trying to hack in the text later? That PHP snippet could potentially produce a huge chunk of text, and you can't insert it verbatim into the DOM - you can only insert its output (which you'd have to capture with ob_start()/ob_get_clean() anywyas).