BuddyPress profiles social icons

<?php 

// http://stackoverflow.com/questions/7952977/php-check-if-url-and-a-file-exists
function is_200($url) {
    $options['http'] = array(
        'method' => "HEAD",
        'ignore_errors' => 1,
        'max_redirects' => 0
    );
    $body = file_get_contents($url, NULL, stream_context_create($options));
    sscanf($http_response_header[0], 'HTTP/%*d.%*d %d', $code);
    return $code === 200;
}

// Social Media Icons based on the profile user info
function member_social_extend(){
	$dmember_id   = $bp->displayed_user->id;

	$profiles = array(
		'Website',
		'Email',
		'Twitter',
		'Facebook profile',
		'Facebook page',
		'Google+',
		'Vimeo',
		'LinkedIn',
		'Kickstarter',
		'Behance',
		'Custom web link'
	);

	$profiles_data = array();

	foreach( $profiles as $profile ) {
		$profile_content = '';
		$profile_content = xprofile_get_field_data( $profile, $dmember_id );
		if ( !empty( $profile_content ) ) {
			$profiles_data[ $profile ] .= $profile_content;
		}
		
	}

	echo '<div class="member-social">';

	if( !( empty( $profiles_data ) ) ) {
		echo '<h3>Find me online:</h3>';
		echo '<ul class="social-icons">';

		while ( list( $key, $value ) = each( $profiles_data ) ) {

			$profile_icon_uri         = get_stylesheet_directory_uri() . '/assets/images/' . sanitize_title( $key ) . '.png';
			$profile_icon_uri_exists  = is_200( $profile_icon_uri );

			$default_profile_icon_uri = get_stylesheet_directory_uri() . '/assets/images/custom-web-link.png';

		    if( $profile_icon_uri_exists ) {
		    	$profile_icon = $profile_icon_uri;
		    } else {
		    	$profile_icon = $default_profile_icon_uri;
		    }

		    echo '<a href="' . $value . '" title="' . $key . '" target="_blank"><img src="' . $profile_icon . '" /></a>';
		}

		echo '<ul class="social-icons">';
		echo '</div>';

	}
}
add_filter( 'bp_before_member_header_meta', 'member_social_extend' );