Реализация редиректа PHP + TXT-файл

redirect_via_txt.php

<?php

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

$redirects = array();
$file = file(__DIR__ . DIRECTORY_SEPARATOR . 'redirect.txt');

foreach ($file as $row) {
    list($src, $target) = explode(' ', trim($row));
    $redirects[$src] = $target;
}
$need = $_SERVER['REQUEST_URI'];

if (array_key_exists($need, $redirects)) {
    header("HTTP/1.1 301 Moved Permanently");
    header("Location: " . $redirects[$need]);
    exit();
}

/*
    redirect.txt
    ---
    /shop/ http://shaluny.ru/
    /catalogue/shop/ http://shaluny.ru/
    /catalogue/shop/product/ http://shaluny.ru/
    /catalogue/shop/product/3189/ http://shaluny.ru/
*/

// EOF