[wp-hackers] nested shortcode

[Daiv Mowbray]

I've been around the bend on this one.

is it possible to do the following?

hello list

I add a shortcode [myclass] anywhere in a post
which will then add to any image in that post the class of myclass.

remember that a post image probably has [caption] shortcode already.

I have (inside my plugin class):
add_shortcode ( 'myclass' , array(&$this, 'class_shortcode_out'));

function class_shortcode_out( $attr, $content='' ){
	 extract(shortcode_atts(array(
			'class_height' => '',
			'class_color' => ''), $attr));
	$content = $this->class_replace($content);
	return do_shortcode($content);
}
  function class_replace($content) {
         $pattern = "/<img(.*?)src=('|\")([^>]*).(bmp|gif|jpeg|jpg|png) 
('|\")(.*?)class=('|\")(.*?)('|\")(.*?) \/>/i";
         $replacement = "<img$1src=$2$3.$4$5$6class=$7$8 myclass$9$10 / 
 >";
         $content = preg_replace($pattern, $replacement, $content);
	return $content;
}

This isn't working for me. The preg_replace works, but not with the  
[captions] shortcode.
Any ideas?
Thanx.
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Daiv Mowbray
daiv at daivmowbray.com
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