Re: How to pass parameter from PHP to Octave?

[Oliver Heimlich]

On 29.07.2015 14:41, deepus wrote:
> How to pass parameter from PHP to Octave
>
> My PHP code is:* test.php*
>
> /$a = 3;
> $b = 4;
> $cmd = "C:\Octave\Octave4\bin\octave-cli C:\wamp\www\dspace\sr.m $a $b";
> $ex = exec($cmd, $op);
> var_dump($ex);
> var_dump($op); /
>
> My Octave code:* sr.m*
>
> /# how I retrieve the parameters a, b
> sqrt(a^2 + b^2)/
>
>
> I want to pass the variables $a and $b from the PHP code to Octave code. I
> already define the variable in test.php and my problem is how to retrieve
> the variable in octave code (sr.m).
>
> In python we can retrieve the parameter as
>
> /a = float(sys.argv[1])
> b = float(sys.argv[2])/
>
> Like that how can I retrieve the parameters in octave code. I think the
> question is clear.
>
> Please help me...

Hello,

there are ways to call octave over cli, but this would be very slow and 
you would introduce errors because of number conversions.

You could run octave as a socket server, connect with a php client, pass 
the parameters and receive the result.  This is very fast and provides 
perfect accuracy.

You can use attached scripts and customize them to your needs. The 
scripts pass parameters and results as binary64 numbers. In the example 
you have to ...

1. start octave
2. make sure that the sockets package is installed (pkg install -forge 
sockets)
3. run the server.m script
4. use callOctave(3.0, 4.0) in PHP to receive an array with one element: 
5.0. The server script currently executes the hypot functions from your 
example.

Best regards
Oliver

client.php
Description: application/php

server.m
Description: Text Data