open.php

<?php

function getOpenBinary(): string
{
    return match (PHP_OS_FAMILY) {
        // Using PowerShell allows us to open the file in the background
        'Windows' => 'powershell Start-Process',
        'Darwin' => 'open',
        'Linux' => 'xdg-open',
        default => throw new Exception(500,
            sprintf("Unable to find a matching binary for OS family '%s'", PHP_OS_FAMILY)
        )
    };
}