Warning: fgets() expects parameter 1 to be resource, string given in

Question

I am somewhat new to php, but I do understand some of the key concepts of it, however nothing about STDIN, what it is and why I am getting this error.

I am developing with the eTrade API PHP SDK and the development community over there seems to be a ghost-town, and absolutely nothing here on stackoverflow.

Here is the result of the php script I am trying to run http://philiparudy.com/etrade/Samples/test_market.php

I guess I am confused about this simple sample script that they give you where the end of the php script looks like this:

function get_input($str)
{
 echo "\nPlease enter * $str * : ";
 return trim(fgets(STDIN));
}
function show_menu()
{
 echo "\n\nChoose from following options..\n\n";
 echo "1. Get Option Chain\n\n";
 echo "2. Product Lookup\n\n";
 echo "3. Get Expiry Dates\n";
 echo "4. Get Quote\n";
 echo "0. Exit\n";
 echo "Enter your choice:";
 $choice = trim(fgets(STDIN));
return $choice;
}

Above all of this is a switch function that is supposed to handle your input, but there is no place to put the input on the webpage?

I also tried copying and pasting this in the terminal to which I got an array of different errors. Am I missing the boat completely here?

Answer 1

i found this:

$stdin = fopen('php://stdin', 'r');
$response = fgetc($stdin);

fopen() opens a stream of stdin as readonly ('r') and fgetc() waits for the input (only one caracter and you have to hit enter). with fgets() you can read a whole line (the lineending is an EOL (\n, \r or so)) (that's only for command line use else it wont work)