PHP: Wordpress URL Segments

PHP: Wordpress URL Segments.php

Add to header or function file:

<?php 
    // URL Segments and Master ID
    // 
    // Segment Variables: $GLOBALS['segment']['1'], $GLOBALS['segment']['2'], etc.
    // Master ID Variable: $GLOBALS['master_id'] 

    global $segment;
    global $master_id;
    $segment = explode('/', parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH));
    $last_segment_array  = array_slice($segment, -2, 1, true);
    $last_segment = array_shift($last_segment_array);
    $master_id = $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE post_name = '$last_segment'");
?>

Example Usage:

<?php if ($GLOBALS['segment']['1'] == 'test-1') : ?>
    <!-- If True -->
<?php endif; ?>

<?php if ($GLOBALS['segment']['1'] == 'test-1' && $GLOBALS['segment']['2'] == 'test-2') : ?>
    <!-- If True -->
<?php endif; ?>

<?php if ($GLOBALS['master_id'] == '10') : ?>
    <!-- If True -->
<?php endif; ?>