Convert a string of degrees decimal minutes to a usable decimal degrees latitude, longitude

ddm_to_dd_latlng_converter.php

<?php
// Accepts: 12 34.567N, 1 2.345W
// Returns: [12.345, 12.345]
function ddmToDDConvert($original) {
    $coords = [];
    $original = explode(',', $original);
    $dirDict = ['S' => -1,'N' => 1,'W' => -1,'E' => 1];

    if (count($original) == 2) {
        $ddmLat = explode(' ', trim(ltrim($original[0])));
        $ddmLng = explode(' ', trim(ltrim($original[1])));

        $ddmLat[] = $dirDict[substr($ddmLat[1], -1)];
        $ddmLng[] = $dirDict[substr($ddmLng[1], -1)];

        $ddmLat[1] = substr($ddmLat[1], 0, -1);
        $ddmLng[1] = substr($ddmLng[1], 0, -1);

        $arr = [[$ddmLng[0], $ddmLng[1], $ddmLng[2]], [$ddmLat[0], $ddmLat[1], $ddmLat[2]]];
        print_r($arr);

        foreach ($arr as $el) {
            $deg = (float)$el[0];
            $min = (float)$el[1];
            $dir = (float)$el[2];

            $coords[] = $dir * ($deg + ($min / 60.0));
        }
        
        return $coords;
    } else return false;
}
?>