- var_dump: documentation ( source)
<?php
$string = '<p align="center"><font face="Proxima Nova Alt Th" size="21" color="#ffffff" letterSpacing="-1.000000" kerning="1"><b>YOUR</b></font></p><p align="center"><font face="Proxima Nova Alt Th" size="21" color="#ffffff" letterSpacing="-1.000000" kerning="1"><b>OFFER</b></font></p>';
$dom = new DOMDocument;
$dom->loadHTML($string);
$el = $dom->getElementsByTagName("font");
foreach ($el as $e)
{
var_dump($e);
}