tinymce adds p tags around content and stores it in database, when I retrieve with PHP, what's best way to split the p tag and add a class to each

Tinymce stores something like this in database:

<p>Hello World</p>

When I retrieve from database, I would to extract each instance of

and add a class to it:

<p class='hello_world'>Hello World</p>

I think I got it to work:

    if ( ! funct开发者_JAVA百科ion_exists('tinymce_tag')){
    function tinymce_tag($content = ''){

        $pos = strpos($content, '<p>');

        if($pos !== false){
            $content = substr_replace($content,' class="paragraph"', 2, 0);
            return  $content;
        }
        return $content;
    }
}

You can try a php parser like this one

Your problem is, that you use htmlspecialchars(). This changes it from HTML to plain text. Just remove this function call and it will be html code.