SVG inline

Simply copy/paste this into your HTML:

<svg class="humbleicons hi-brand-php" xmlns="http://www.w3.org/2000/svg" width="24" height="24" fill="none" viewBox="0 0 24 24"><path stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="m10 16-6-4 6-4m5-.052c1.5-2.543 5-1.426 5 .957s-2.917 2.617-2.917 5M17 16.5h.01"/></svg>

SVG sprite

Download the sprite file and address the icon by its slug:

<svg class="humbleicons"><use xlink:href="humbleicons.svg#brand-php"/></svg>