<?php

header("Content-type: text/html");

//$file = "a|b\nc|d\n";// file_get_contents('./urban.txt', FILE_USE_INCLUDE_PATH);
$file = file_get_contents('./urban.txt', FILE_USE_INCLUDE_PATH);
$pieces = explode("\n", $file);
$input = $_GET['q'];
$output = '';
foreach ($pieces as &$value) {
    $pair = explode("|", $value);
    if($pair[0]==$input)
    {
        $output = $pair[1];
    }
}
echo $output;