运行示例转换时出现 PHPCoord TypeError

Question

I'm battling on trying to use PHPCoord to convert different types of coordinates. I am new to composer and PHP libraries so could well be making basic mistakes. I had issues related to Autoloading which I've now resolved but I'm now facing errors of a different kind which could well be basic and due to my inexperience in this area.

I'm using the following example code taken direct from thePHPCoord docs :

use PHPCoord\CoordinateReferenceSystem\Geographic2D;
use PHPCoord\CoordinateReferenceSystem\Projected;
use PHPCoord\GeographicPoint;
use PHPCoord\UnitOfMeasure\Angle\Degree;

// Converting from NAD83 to Florida State Plane
$from = GeographicPoint::create(
    Geographic2D::fromSRID(Geographic2D::EPSG_NAD83),
    new Degree(28.46),
    new Degree(-80.53),
    null
);
$toCRS = Projected::fromSRID(Projected::EPSG_NAD83_FLORIDA_EAST);
$to = $from->convert($toCRS); // $to instanceof ProjectedPoint

Above this I'm autoloading with:

$theme_root = dirname(__DIR__, 1);
require_once $theme_root . '/vendor/autoload.php';

I'm getting the following errors:

Fatal error: Uncaught TypeError: Argument 1 passed to PHPCoord\GeographicPoint::create() must be an instance of PHPCoord\UnitOfMeasure\Angle\Angle, instance of PHPCoord\CoordinateReferenceSystem\Geographic2D given...

As the example code relates to North American geography I also added the optional add-on datapack: datapack-northamerica , though this had no effect.

Any help would be much appreciated. Thank you!

Answer 1

Answering this myself in the hope that anyone else struggling with PHPCoord might find guidance.

As kindly pointed out by @Foobar I was using an older version of the library despite installing it recently using composer . This was because composer had detected my version of PHP (7.4.12) and decided it didn't meet the criteria for the latest version of PHPCoord. I assumed I had the latest version and was trying to use code examples suitable only for PHPCoord version 5 and beyond but I was running version 4.x.

It's all slightly confusing as the documentation states:

PHPCoord v4 is compatible with PHP 7.3+

However, the code examples are for PHPCoord v5 which needs PHP 8.0+.

My solution was to upgrade my PHP version to 8.x.

This removed the error outlined above, however I then got a new insufficient memory error which was rectified by upping my MAMP memory limit from 128M to 256M.

So to re-cap, my first issue was not including require_once 'vendor/autoload.php';

I then had minimum requirement issues due to running PHP 7.4.x and not version 8.x and was unknowingly running an outdated version of the library.

I then had insufficient memory allocation issues which I resolved by editing php.ini changing memory_limit = 128M to memory_limit = 256M .

Thanks for all the comments and help. I can now move on to converting OSGB references to Lat/Lon but will need to ensure the production host is running PHP version 8 and has a sufficient memory limit.