PHP system() args

2019-07-22 23:49发布

站内文章 / PHP
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问题:

I have the following code that executes a C++ program and outputs it:

<html>
  <head>
    <title>C++</title>
  </head>
  <body>
    <div><?php 
    system("app.exe", $out);
    echo rtrim($out, "0");
     ?></div>
  </body>
</html>

How can I make it so that you can pass arguments to the c++ program, say like this...

If this was the c++ program

#include <iostream>
#include <string>
int main(){
  string input = getarg();//Not really a function, just one I kinda want to know
  cout << input;
  return 0;
}

Could I do something like this?

<html>
  <head>
    <title>C++</title>
  </head>
  <body>
    <div><?php 
    system("app.exe arg=hello-world", $out);
    echo rtrim($out, "0");
     ?></div>
  </body>
</html>

I don't know a lot of parts to this problem, I can execute the program but I just need to pass arguments.

回答1:

You can pass the arguments space separated after the command like system("app.exe hello-world 2 3", $out);

in your c++ program

 int main (int argc, char** argv) {
    // argv[1] will be pointing to "hello-world"
    // argv[2] => 2
    // argv[3] => 3 
 }


标签： php c++ system executable exec
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