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HTML and PHP help please

coderrquitsreality
By coderrquitsreality
in Programming
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Go to solution Solved by Guest,

 

I would write to a text file then watch it.

 

On the web side of things. 

<!doctype html>
<head>
  <title>Example</title>
</head>

<?php
if (isset($_POST['form_submitted'])) {
    file_put_contents('webInput', $_POST['textInput']."\n", FILE_APPEND);
}
?>

<body>
    <form action="index.php" method="POST"> 
        <div> Text Input: <input type="text" name="textInput"> </div>
        <input type="hidden" name="form_submitted" value="1" />
        <input type="submit" value="Submit">
    </form>
  
</body>
</html>

 

Then in a terminal, do something like this. 

watch -n2 tail -5 /path/to/htdocs/webInput

 

In this example we are writing to "webInput" then reading last 5 lines every 2 seconds in a terminal.

 

4 hours ago, SupaKomputa said:

I don't think php can directly talk to the console.

You need some kind of listener that reads the output from the log or database.

So the input you type in has to be stored somewhere and then you run a command in the terminal to read it.

 

You can use exec or passthru, but it opens up a world of security and permission issues, especially when you make it accept outside user input.

These examples probably wont work unless you have setup permissions for it or you have your web server configured incorrectly. 

exec("wall ".$_POST['textInput']);

  

passthru("echo ".$_POST['textInput']." >> /dev/pts/1")
Posted

Hi, so I want to know how to take an input from  

<input>

and output it on my Raspberry Pi terminal as an  

echo

response. How would I do that?

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Posted 
<?php 

echo "<input type="text">";

?>

you probably want to use form tag beforehand.

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  • Author
3 minutes ago, SupaKomputa said:

you probably want to use form tag beforehand.

Ah yes... I'm dumb it's 4:21 am here

 

And how do I link the PHP to HTML?

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Posted

anyway what do you want to do? looks like you dont know what you're doing.

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  • Author
Just now, SupaKomputa said:

anyway what do you want to do? looks like you dont know what you're doing.

I want to basically type something in a webpage and display it on the Raspberry Pi terminal

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Lian Li A4-H2O

 

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tmux

btop

git

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Posted

I don't think php can directly talk to the console.

You need some kind of listener that reads the output from the log or database.

So the input you type in has to be stored somewhere and then you run a command in the terminal to read it.

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Posted
  • Solution

 

I would write to a text file then watch it.

 

On the web side of things. 

<!doctype html>
<head>
  <title>Example</title>
</head>

<?php
if (isset($_POST['form_submitted'])) {
    file_put_contents('webInput', $_POST['textInput']."\n", FILE_APPEND);
}
?>

<body>
    <form action="index.php" method="POST"> 
        <div> Text Input: <input type="text" name="textInput"> </div>
        <input type="hidden" name="form_submitted" value="1" />
        <input type="submit" value="Submit">
    </form>
  
</body>
</html>

 

Then in a terminal, do something like this. 

watch -n2 tail -5 /path/to/htdocs/webInput

 

In this example we are writing to "webInput" then reading last 5 lines every 2 seconds in a terminal.

 

4 hours ago, SupaKomputa said:

I don't think php can directly talk to the console.

You need some kind of listener that reads the output from the log or database.

So the input you type in has to be stored somewhere and then you run a command in the terminal to read it.

 

You can use exec or passthru, but it opens up a world of security and permission issues, especially when you make it accept outside user input.

These examples probably wont work unless you have setup permissions for it or you have your web server configured incorrectly. 

exec("wall ".$_POST['textInput']);

  

passthru("echo ".$_POST['textInput']." >> /dev/pts/1")
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