Topic 2C

This is the thread for problems/comments related to Topic 2C.

This topic is completed, no problems.

Hi
well I am not managing with the task 2c1

I assume it it the GET vs POST command yet again, but I still do not get it working.

in the html file I use
<form method='POST' action='function.php'> (where function.php is the file name of the file being called.


in the .php file I am lost
I have tried a few different options, but I am guessing and this is not the correct way.



when I run the html file I get the option to open or save the php file

I am also having problems. I changed the form to post and added
$cost=$_POST['cost']; above the function and it just returns an answer of zero.

This is much simpler code for 2c-1. Change method to post in cost.html

<?php
$price=$_POST['price'];
$items=$_POST['items'];

function total($price, $items)
{
$cost=$price* $items;
echo "the total price is $$cost";
}

echo total($price,$items);
?>

libby - $cost=$_POST['cost']; is not going to bring you anywhere - cost was not passsed from cost.html to functions.php.
price and items were.

Note: the $ meant as a dollar as here above could cause problems. Better to print it outside php, like:

<?php
$price=$_POST['price'];
$items=$_POST['items'];

function total($price, $items)
{
$cost=$price* $items;echo "the total price is"; ?>$<?php echo "$cost";}

echo total($price,$items);
?>

I have also now copleted this section

one question

why does php NOT simply ignore all that is placed between /*




*/


if I place valid code as comments it tries to interpret this, it gave me an error said it could not redefine a variable, and when I placed // in front of that line (all still inside /* */)

it gave me a different output

Check you code. Make sure you don't have a */ before the last one you want to use. PHP check for the first */ it find. I have made this error a few times. The rule is, nested comments will not work.

If I do this:

/*
echo total($price,$items);
*/

or this

/*
// echo total($price,$items);
*/
or this

// echo total($price,$items);


it WILL not, CANNOT, and SHALL not parse the code. There is no way it can! Whether its valid code or not does not matter. You can put your dog in there and PHP will ignore it....

the // inside the /* */ is irrelevant since it is not parsed in any event.

well I would like to agree but my software is influenced by what it in the comments, so much so that I removed the comments, which I consider bad programming practice

Quite right about removing comments. It helps you to remember exactly what you were thinking when looking at this code a year or more down the road. Never remove or not use comments.

/*
echo "this is amazing";
*/


If the above is shown in the browser window when you call the page it appears in, assuming apache is running and parsing your code, then I am at a loss for words.