Get social icon depending on the social network (for wp)

social.php

<?php

function get_social_icon( $social_url ) {
	$default_icon = 'access';
	if ( empty( $social_url ) ) {
		return sprintf( 'icon-%s', $default_icon );
	}
	$parse_social = wp_parse_url( $social_url );

	// Get the social's sld in order to use the corresponding icon
	preg_match( "/(\w+)\.\w+$/", $parse_social['host'], $match );

	// Set use the retrieved icon for the social or use the default one 
	$icon = sprintf( 'icon-%s', $match[1] ?: $default_icon );
}