- preg_replace: documentation ( source)
<?php
$string = <<<END
Chris<br>
<strong><span style="color: #7f7f7f;">Power</span><span style="color: #548dd4;">code</span></strong> - The smart choice in ISP billing and OSS<br>
powercode.com<br>
P: 920-351-1010<br>
E: support@powercode.com
END;
echo preg_replace("/<br>\n/", '<br>', $string);