move <br> tag to right side of </p>

[kalster]

I have a line of text like this...

<p>example<br /><br /><br /></p><br />

where the number of br tags before and after the </p> tag are unknown.

I need the line displayed like this...

<p>example</p><br /><br /></br /><br />

I need it in the preg_replace, where the part of the line begining with <p>example is untouched.

Thank you in advanced.

[kalster]

Actually, i would like the line to be <p>example</p><br />

[QuickOldCar]

I would remove any multiple breaks and place it back

$string = "<p>example<br /><br /><br /></p><br />";
$string = preg_replace("~<br />+~",'',$string);
$string .= "<br />";