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When I add images to a post via the TinyMCE editor I’d like WP to add a wrapping div around the <img> tag like <div class="img-wrapper"><img src="url-to-image" alt="image" /></div>. Is that somehow possible?

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1 Answer 1

I think it is a better idea, if you filter the output, the the_content and add the div on all images. It is better for feature, if you will remove this markup, it is not inside the database.

add_filter( 'the_content', 'fb_add_div_to_img' );
function ( $content ) {

    // find img and add markup
    return $content;
}

To find and replace the img in content use a regex, like this

If you use the regex preg_match_all( '/\<img [^>]*src=\"([^\"]+)\"[^>]*>/', $content, $arr, PREG_PATTERN_ORDER); then you get a array. Inside this array you find the img tag with all values, $arr[0]. Enhance this var with your markup and return to the var $content. Also here a example from the web. Additional hint for a regex tester, there I like: Regex Test Tool

But it is also possible to add markup on insert images in the editor:

add_filter( 'image_send_to_editor', 'fb_give_linked_images_class', 10, 8 );
function fb_give_linked_images_class( $html, $id, $caption, $title, $align, $url, $size, $alt = '' ){

    $html; //contains the string you need to edit, you might want to consider to rebuild the complete string.

    return $html;
}
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Can you give me an advice how to add the regex to the function? Never heard of that before. –  Betsy Jan 20 '13 at 15:14
    
Maybe the enhancement help you; current I dont on a machine to test regex and source. –  bueltge Jan 20 '13 at 19:07

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