从php调用八度音阶脚本时出现意外输出 [英] Unexpected output while calling octave script from php

问题描述

我正在从PHP调用Octave脚本并将参数传递给它.但是我得到了意外的输出.

I am calling Octave script from PHP and passing parameters to it. But I get the unexpected output.

我用来传递参数并调用Octave脚本的PHP代码是:

The PHP code I'm using to pass arguments and call the Octave script is:

$a=8;
$b=3;
$cmd = "C:\Octave\Octave4\bin\octave-cli C:\wamp\www\dspace\add.m $a $b";
$ex = passthru($cmd, $op);
var_dump($ex);

我的Octave脚本:

My Octave script:

arglist = argv();
 a = arglist{1};
 b = arglist{2};

function f (a,b)
  a + b
endfunction

printf(f(a,b));

输出结果为:

ans = 107

预期输出为:

11

我该如何解决?

推荐答案

您正在添加 ASCII代码表示字符"8"(即56)和"3"(即51)，因此结果为107.将字符串转换为数字:

You are adding the ASCII codes for the character "8" which is 56 and "3" which is 51 so the result is 107. Convert the strings to numbers:

arglist = argv();

a = str2num (arglist{1});
b = str2num (arglist{2});

function ret = f (a,b)
  ret = a + b;
endfunction

printf("%i", f(a,b));

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