Normalize implode() argument order for code PHP 8

[SaidNizamWevetel]

This PR updates the implode() call to use the conventional argument order (array, separator) as recommended by the PHP manual.

What was changed

Updated:
$name = implode('', $parts);
to
$name = implode($parts, '');

Why
Both argument orders are accepted by PHP, but the canonical form is implode(array $pieces, string $separator).
Improves consistency with common PHP coding standards.
Makes the code clearer for developers who expect the standard ordering.

Impact
No functional change.
Purely a code-quality improvement.

[RadicalDog]

This is fixed on master already, but is not included in a numbered release. I had to point our Composer require to: "marcelog/pami": "dev-master"