short script in PHP that takes command line args representing any of the MTA's subway lines and returns their current services status

mtastatus.php

#!/usr/bin/php
<?php
/**
 * lineColor
 * mostly for use with DeMarko's color extension of IRCCat
 *
 * @arg line string representing MTA Subway line
 * @return string representing MTA Subway line color 
 */
function lineColor($line) { 
    switch($line) {
        case '123':  return "#RED";
        case '456':  return "#DGREEN";
        case '7':    return "#PURPLE";
        case 'ACE':  return "#BLUE";
        case 'BDFM': return "#ORANGE";
        case 'G':    return "#GREEN";
        case 'JZ':   return "#BROWN";
        case 'L':
        case 'S':    return "#DGRAY";
        case 'NQR':  return "#YELLOW";
        default:     return "#NORMAL";
    }
}

/**
 * Take any number of MTA subway lines as command line args and return 
 * IRCCat-friendly messages describing the service status for the given lines
 */

/* @type SimpleXMLElement Object */
$statusxml;
$serviceStatusURL = 'http://mta.info/status/serviceStatus.txt';

try {
    $serviceStatus = file_get_contents($serviceStatusURL);
    $statusxml = simplexml_load_string($serviceStatus);
} catch (Exception $e) {
    error_log("Could not establish connection to MTA Server");
}

if (get_class($statusxml) == "SimpleXMLElement") {
foreach (array_slice($argv, 1) as $arg) {
    foreach ($statusxml->subway[0] as $line) {
        // nobody goes to Staten Island
        if ($line->name != "SIR" && stristr($line->name, $arg)) {
            print(lineColor($line->name) . strtoupper($arg) . "#NORMAL - " . ucwords(strtolower($line->status)));
            print(" :: last updated " . $line->Date . $line->Time . "\n");
        }
    }
}
} else {
    print("Sorry, MTA subway info isn't available at the moment. Please try again in a few minutes.");
}
?>