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Date: Mon, 5 Dec 2022 11:06:23 +0100
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To: j adams <zardozrocks@gmail.com>, internals <internals@lists.php.net>
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Subject: Re: PHP support for matrix operations - BLAS, LAPACK.
From: cmbecker69@gmx.de ("Christoph M. Becker")

On 05.12.2022 at 00:43, j adams wrote:

> I apologize if I have the wrong mailing list here. I'm hoping ot ask the
> PHP developer community if there's any appetite for functions to handle
> matrix operations and scientific computing.
>
> I took a course on machine learning which had us code solutions using
> matlab/octave. This year I embarked on trying to translate those functio=
ns
> to PHP and have been quite surprised to learn that pure php is quite
> inefficient for matrix multiplication. I've been trying to chase down an
> effective way to perform matrix operations in PHP and posting my questio=
ns
> and progress on this forum at PHPBuilder:
> https://board.phpbuilder.com/d/10403480-converting-matlab-machine-learni=
ng-routines-to-php-need-matrix-operations
>
> Fast matrix operations seem to be absolutely critical for machine learni=
ng,
> at least for Support Vector Machines and Neural Networks. I know that th=
ere
> is a FANN extension, but it seems to me that it would be beneficial for
> PHP's use in scientific applications if it had support -- either nativel=
y
> or via some extension -- for matrix operations and possibly other
> statistical or scientific computations. Python has numpy, for example.
>
> How does everyone feel about BLAS or LAPACK extension for PHP? I'm poorl=
y
> equipped to cook up such a thing, but these libraries already exist and
> could offer great improvements in performance.

There is already <https://pecl.php.net/package/Tensor>, which should
serve these needs.

=2D-
Christoph M. Becker