So, I am using heading tags h1-h6 on my site in various places, what I'd like to do is put a div around those tags using a WP function. Right now I am using some jQuery to get the job done, but I'm trying to minimize the amount of jQuery on my site, so I figured it'd be better to use some kind of preg_replace to find any h1-h6 tags and add an outer div.

My current jQuery looks like this: $("h6, h5, h4, h3, h2, h1").wrap('<div class="title"></div>');

I found some code that works for images, but I'm not sure how to tweak it, so I can use it for heading tags:

function outer_img_wrap( $content ) {
    $image = '/(<img([^>]*)>)/i';
    $wrapper = '<span class="featured">$1</span>';
    $content = preg_replace( $image, $wrapper, $content );
    return $content;
}
add_filter( 'the_content', 'outer_img_wrap' );

Any help is appreciated. The function doesn't have to look like that, just found that for images and thought it was nice and simple.

Thanks,
Josh

So, I am using heading tags h1-h6 on my site in various places, what I'd like to do is put a div around those tags using a WP function. Right now I am using some jQuery to get the job done, but I'm trying to minimize the amount of jQuery on my site, so I figured it'd be better to use some kind of preg_replace to find any h1-h6 tags and add an outer div.

My current jQuery looks like this: $("h6, h5, h4, h3, h2, h1").wrap('<div class="title"></div>');

I found some code that works for images, but I'm not sure how to tweak it, so I can use it for heading tags:

function outer_img_wrap( $content ) {
    $image = '/(<img([^>]*)>)/i';
    $wrapper = '<span class="featured">$1</span>';
    $content = preg_replace( $image, $wrapper, $content );
    return $content;
}
add_filter( 'the_content', 'outer_img_wrap' );

Any help is appreciated. The function doesn't have to look like that, just found that for images and thought it was nice and simple.

Thanks,
Josh

• filters
• title
• the-content

• Try a regular expression like: <h.*?<\/h.>. – Nicolai Grossherr Commented Mar 29, 2019 at 13:27
• @Nicolai - Thanks for the quick reply, I ran this through a regex validator and it finds everything, the header tags and the content, looking at my example code above this should work if I add it where the $image variable is right? – joshmrodg Commented Mar 29, 2019 at 14:04
• Yes, you have to modify the pattern variable, it should be like: /(<h.*?<\/h.>)/ims. Not sure about your issues, it works in my test. – Nicolai Grossherr Commented Mar 29, 2019 at 14:27

2 Answers 2

Try this code

function wrap_heading_with_div( $content ) {
    $heading = '/<h\d.*?>(.*?)<\/h\d>/ims';
    $wrapper = '<div class="title">$0</div>';
    $content = preg_replace($heading, $wrapper, $content);
    return $content;
}
add_filter( 'the_content', 'wrap_heading_with_div' );

Live Demo

The code you’ve posted is a great starting point. All you have to do is to change the expressions inside of it.

It’s a little bit trickier, because you have to replace opening and closing tag. I would go for something like this:

function wrap_headers_with_div( $content ) {
    $content = preg_replace('/<h([1-6])>/', '<div class="title"><h$1>', $content);
    $content = preg_replace('/<\/h([1-6])>/', '</h$1></div>', $content);

    return $content;
}
add_filter( 'the_content', 'wrap_headers_with_div' );