NMEA GPRMC - (GPRMC) PARSER

gprmc.php

<?php
function parse_nmea(string $geo_str) : array
{
    $geo_str = trim($geo_str);
    $split = explode(",", $geo_str);
    $split = array_map('trim', $split);
    $lat = $split[3];
    $lat_2 = abs(substr($lat, 0, 2));
    $lat_3 = (abs(substr($lat, 2)) / 60);
    $lon = $split[5];
    $lon_2 = abs(substr($lon, 0, 3));
    $lon_3 = (abs(substr($lon, 3)) / 60);
    $utc = explode('.', $split[1])[0];
    $date = $split['9'] ?? null;
    $time = null;
    if ($utc && !empty($split[9])) {
        $h = substr($utc, 0, 2);
        $i = substr($utc, 2, 2);
        $s = substr($utc, 4, 2);
        $d = substr($date, 0, 2);
        $m = substr($date, 2, 2);
        $y = substr($date, 4, 2);
        $time = @mktime($h, $i, $s, $m, $d, $y)?:null;
    }
    return [
        'data' => $geo_str,
        'utc' => $utc,
        'type' => 'GPRMC',
        'status' => $split[2]??null,
        'format_y' => $split[3]??null,
        'format_x' => $split[5]??null,
        'alpha_y' => $split[4]??null,
        'alpha_x' => $split[6]??null,
        'latitude' => $lat_2 + $lat_3,
        'longitude' => $lon_2 + $lon_3,
        'speed' => $split[7]??null,
        'track' => $split[8]??null,
        'utc_date' => $date,
        'magvar' => $split[10],
        'mag_ew' => trim($split[11] ?? ''),
        'unix_time' => $time,
        'date_utc' => $time ? date('Y-m-d H:i:s', $time) : '',
    ];
}

$gprmc = '$GPRMC,114530.000,A,0344.5185,N,09840.5572,E,0.0,116.1,181220,,,A/00000,00000/0,0,0,0/307267400//fd5/';
$nm = parse_nmea($gprmc);
print_r($nm);