PHP: Calling a function and passing a value to a variable?

Question

I need to add a statement to the end of this script that calls the checkgrade() function and passes to it the value from the grade form variable. I have the form etc already programmed out, and I have a rough idea how to do this but I'm a little confused if I am on the right path or not. Here is my code, and how I think the statement should be written, but I would like another opinion or two before I try and finalise it on the server:
<?php 
function checkGrade($Grade) {
     switch ($Grade) {
          case "A":
		echo "Your grade is excellent.";
		break;
	  case "B":
		echo "Your grade is good.";
		break;
	  case "C":
		echo "Your grade is fair.";
		break;
	  case "D":
		echo "You are barely passing.";
		break;
	  case "F":
		echo "You failed.";
		break;
	  default: 
		echo "You did not enter a valid letter grade.";
	}
?>

statement:

function checkGrade($_GET["Grade"]


I have an HTML form I am using that has the Get action from this php, with a single text input named Grade.

rbjolly · Accepted Answer

Unfortunately, I did not check the code before I posted the first time. I had to add the "case" keyword for option C and drop the function keyword where I called the checkGrade function. This was easy enough to see when I copied the code into Netbeans. If you don't already use Netbeans, you might want to give it a try. See source link (there is a specific download version for PHP).

<?php
function checkGrade($Grade) {

switch ($Grade) {

    case "A":
        $msg = "Your grade is excellent.";
        break;
    case "B":
        $msg = "Your grade is good.";
        break;
    case "C":
        $msg = "Your grade is fair.";
        break;
    case "D":
        $msg = "You are barely passing.";
        break;
    case "F":
        $msg = "You failed.";
        break;
    default:
        $msg = "You did not enter a valid letter grade.";
        break;
}

return $msg;

}

// *** Now call your function.
if (isset($_GET["Grade"])) {

$grade = $_GET["Grade"];

echo(checkGrade($grade));

} else {

echo("Error. No grade selected.");

}

?>

? · Answer

try this reference:
http://www.w3schools.com/php/php_functions.asp

PHP: Calling a function and passing a value to a variable?

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