About Custom Icon in fontawesome field

[ashikur11]

Hi there,
How can i extend fontaweome field? i want to be there more icon like flaticon, icomoon icon. i am trying like this

function vp_get_fontawesome_icons()
{
	// scrape list of icons from fontawesome css
	if( false === ( $icons  = get_transient( 'vp_fontawesome_icons' ) ) )
	{
		$pattern = '/\.(fa-(?:\w+(?:-)?)+):before\s+{\s*content:\s*"(.+)";\s+}/';
		$subject = file_get_contents(VP_DIR . '/public/css/vendor/font-awesome.min.css');
		preg_match_all($pattern, $subject, $matches, PREG_SET_ORDER);
		$icons = array();
		//fontawesome
		foreach($matches as $match)
		{
		    $icons[] = array('value' => 'fa '.$match[1], 'label' => $match[1]);
		}

		

		$pattern2 = '/\.(flaticon-(?:\w+(?:-)?)+):before\s+{\s*content:\s*"(.+)";\s+}/';
		$subject2 = file_get_contents(get_template_directory_uri(). '/css/flaticon.css');
		preg_match_all($pattern2, $subject2, $matches2, PREG_SET_ORDER);
		$icons = array();
		//flaticon
		foreach($matches2 as $match2)
		{
		    $icons[] = array('value' => 'fa '.$match2[1], 'label' => $match2[1]);
		}

		set_transient( 'vp_fontawesome_icons', $icons, 60 * 60 * 24 );
	}
	return $icons;
}

but it's only returning fontawesome icons.

Please help.

Regards,
Ashikur.