用php执行命令(Execute command with php)

 我想知道如何使用php表单执行一个需要输入密码的命令。 
 
 我使用网站上的表单发送用户名。 这个例子是我的用于从Redis中删除用户的PHP代码，它正在运行。 Rm_user是用C ++编写的可执行文件。 
 
<?php

$email=$_GET['email']; 

$command = sprintf("./rm_user %s", $email);

if ($email != null) {
$output = shell_exec($command);
}
echo "$output";
?>
 
 想要知道的是，如何使用htpasswd编辑此脚本以将admin添加到apache2服务器。 它的命令行是： 
 
sudo htpasswd /etc/apache2/.htpasswd username
 
 如果之后不需要输入密码，那就没什么大不了的了。 但在该命令之后，系统会提示您输入密码。 那么，我可以按照我的方式做到这一点，还是应该考虑其他选择？ 

I want to know how can I execute a command which requires entering password after it, using php form. 
 
I am sending the username using a form on a website. This example is my php code for removing user from Redis and it is working. Rm_user is an executable written in C++.
 
<?php

$email=$_GET['email']; 

$command = sprintf("./rm_user %s", $email);

if ($email != null) {
$output = shell_exec($command);
}
echo "$output";
?>
 
What is want to know is, how can I edit this script to add admin to the apache2 server, using htpasswd. The command line for it is:
 
sudo htpasswd /etc/apache2/.htpasswd username
 
It wouldn't be a big deal if it doesn't require to enter the password afterwards. But after that command you are prompted to enter the password. So, is it possible to do this the way I am doing it, or should I consider other options?

原文：https://stackoverflow.com/questions/37593309