Arriving in Kathmandu

<?php

$patternName = '/(?<name>[a-zA-Z0-9]+)([!@#$?]+)/';
$pattern = '/^(?<name>[a-zA-Z0-9!@#$?]+)(=(?<length>[0-9]+))(<<(?<geocode>.*))/m';
$arr = [];
while (true) {
    $input = readline();
    if ($input === 'Last note') {
        break;
    }

    if (preg_match($pattern, $input)) {
        preg_match_all($pattern, $input, $matchesLG, PREG_SET_ORDER, 0);

        $length = $matchesLG[0]["length"];
        $geocode = $matchesLG[0]["geocode"];
        $longName = $matchesLG[0]["name"];

        $name = "";
        preg_match_all($patternName, $longName, $matchesName, PREG_SET_ORDER, 0);
        foreach ($matchesName as $nameParts) {
            $name .= $nameParts["name"];
        }

        if (strlen($geocode) == $length) {
            echo "Coordinates found! $name -> $geocode\n";
        } else {
            echo "Nothing found!\n";
        }

    } else {
        echo "Nothing found!\n";
    }
}