Adding text before last paragraph

I have a string with some HTML paragraphs, like so: $text="<p>First paragraph</p>\n<p>More text</p>\n<p>Some more text</p>\n<p>End of story</p>"; I'd like to add an image before the last paragraph. I know that preg_replace can replace only the first n occurrences of a string, but how can I replace the _last_ occurrence of a string? My initial idea was to do this: 1) Count how many times "</p>\n<p>" occurs as $n 2) Replace them all with "</p>\n<img src= alt=>\n<p>" 3) Replace $n-1 replacements back to "</p>\n<p>" Is there a cleaner way? Thanks in advance. Dotan Cohen http://lyricslist.com/ http://what-is-what.com/