php cli help

[mpsn]

Hi, I'm getting an infinite loop using PHP and CLI.

 

<?php
#!/usr/bin/php -q
$userName = fread(STDIN,10);
$password = fread(STDIN,10);
$isAuthenticated = false;

$realUserId = "aaa";
$realPassword = "pass";

while( $isAuthenticated!=true )
{
echo "Please login to begin: \n";
echo "Enter username: ".$userName."\n";
echo "Enter password: ".$password;

//now check to make sure is registerd user
//$userId = $u->userLogin($userName, $password);
if($userName != $realUserId && $password != $realPassword)
	echo "Invalid username or password. Please try again.\n";
else
{
	echo " You are logged in! You can begin.\n";
	$isAuthenticated = true;
}
}

?>

 

All help appreciated.

[trq]

#!/usr/bin/php -q
<?php

$isAuthenticated = false;

$realUserId = "aaa";
$realPassword = "pass";

while( $isAuthenticated!=true )
{
echo "Please login to begin: \n";
echo "Enter username: \n";
        $userName = fread(STDIN,10);
echo "Enter password: \n";
        $password = fread(STDIN,10);

//now check to make sure is registerd user
//$userId = $u->userLogin($userName, $password);
if($userName != $realUserId && $password != $realPassword)
	echo "Invalid username or password. Please try again.\n";
else
{
	echo " You are logged in! You can begin.\n";
	$isAuthenticated = true;
}
}

?>

[mpsn]

This is related I guess, why doesn't it exit while loop when i type 'q'?

 

<?php
$task = "f";

function showTasks()//h
{
echo "TASKS:\n";
echo "b - show breakfast menu;"
        echo "l - show lunch menu;"
echo "q - quit: Exit program\n";
echo "h: to view this list of options\n\n\n";
}

while($task != 'q')
{
echo "Please choose a task: ";
$task = fread(STDIN,10);
echo $task;
echo "\n";

if( trim($task) == "h")
	showTasks();
       //other tasks will call other functions, i do later
}
echo "Thanks for using our menu!";
?>

 

All help appreicate.

[Pandemikk]

You use trim($task) to find out if it's h. You should use it to find out if it's q, too.

 

$task = trim(fread(STDIN,10));

[mpsn]

Is it possible to use both fread(STDIN,10) with $argv in php cli?

 

function foo($a,$b);

function foobar($c);

 

let's say I have these functions(I'm aware it's function headers), so I wanto use fread(STDIN,10) to choose the function, and $argv to pass in arguments to the above functions.

 

Can someone show me quickly how to approach this, i'd appreciate it.

[mpsn]

Here is concrete exampel of what i mean, let's say a simple calculator class with add, factorial finding, and government sales tax retrieiving, why doesn't this work?

 

<?php
#!/usr/bin/php -q
class Calculator
{
function factorial($int)
{
	if ($int == 1)
		return 1;
	else 
		return $int*factorial($int-1);
}

function add($num1, $num2)
{
	return $num1 + $num2;
}

function getGSTof($price)
{
	return 0.05*$price;
}
}

//RUNNER
$c = new Calculator();

$task = "";
//TASKS:f for factorial, then 1 arg, a for add, then 2 args, g for gst, then 1 arg
while($task != "q")
{
echo "Please choose a task: ";
$task = trim( fread(STDIN,10)  );

//FACTORIAL
if ( $task == "f" )
{
	$num = $argv[1];
	$factorial = $c->factorial($num);
	echo $factorial;
	echo "\n";
}

//ADDITION
if ( $task == "a" )
        {
	$num = $argv[1];
	$num2 = $argv[2];
	$sum = $c->add($num, $num2);
	echo $sum;
	echo "\n";
        }

//GET GST
if ( $task == "g" )
{
	$price = $argv[1];
	$gst = $c->getGSTof($price);
	echo $gst;
	echo "\n";
}

//QUIT
if($task == "q" )
	break;
}//END WHILE

echo "\n\n\n\nEnd Calculator program";
?>

 

All help apprciated.

[trq]

You can only use $argv to pass in initial arguments to the script. It's not much use if you don't know what function there going to be calling.

 

Also, the shebang needs to be on the first line not within the <?php code block.

[mpsn]

Sorry, can you elaborate a little more. 

[trq]

On what?

[mpsn]

You can only use $argv to pass in initial arguments to the script. It's not much use if you don't know what function there going to be calling.

 

How would I do it with the example Calculator?

[trq]

I would prompt the user for what function they want to use, then prompt them again for the arguments needed.

[mpsn]

So there's no way to do it w/o sub-prompting. I mean, enter a character for task (this tells it which function to choose), then it will read the characters that follow the task (these are the arguments) If not, I'll do as told.

[trq]

You could split the input from STDIN by spaces and parse that as arguments.