function get_walkscore($address)
{
    require_once "WalkScore.php";
    $l_temp = get_lat_long($address);
    $w = new WalkScore('dbd8b3f251a2ea4b4a6be60beae80642');
    $w_options = array('address' => $address, 'lat' => $l_temp['lat'], 'lon' => $l_temp['long']);
    $score = $w->WalkScore($w_options)->walkscore;
    return $score;
}
<?php

include_once 'functions.php';
require_once "WalkScore.php";
$temp = get_lat_long('1119 208th Ave S, Seattle, WA');
echo $temp['lat'];
echo $temp['long'];
$w = new WalkScore('dbd8b3f251a2ea4b4a6be60beae80642');
// WalkScore example
// Example data from http://www.walkscore.com/professional/api.php
$options = array('address' => '1119 208th Ave S, Seattle, WA', 'lat' => 47.416022, 'lon' => -122.320273);
var_dump($options);
printf("\n");
//printf("WalkScore for %s:\n", $options['address']);
//$score = $w->WalkScore($options)->walkscore;
//var_dump($w);
print_r($w->WalkScore($options));