session not echoing

[micmac]

Hi all,
Can anyone tell my why the following is so:

<?php
	ob_start();
	include ('functions.php');


session_start();

if (!empty($_POST['movie_id'])) {


	// Really should do some checking here because otherwise people can just
	// enter stuff in from the url and cause no end of problems
	$movie_id = $_POST['movie_id'];

	// Starting a new cart session
	if (!session_is_registered("cart")) {
		$_SESSION['cart'] = array();
		$_SESSION['items'] = 0;
		$_SESSION['total_price'] = 0.00;		
	}

	// Existing DVD in the cart + 1
	if (!isset($_SESSION['cart'][$movie_id])) { 
        $_SESSION['cart'][$movie_id] += $_POST['new_qty']; // CHANGED 
    } 
    else { 
        $_SESSION['cart'][$movie_id] = $_POST['new_qty']; // CHANGED 
    }     

    $_SESSION['total_price'] = calculate_price($_SESSION['cart']); 
    $_SESSION['items'] = calculate_items ($_SESSION['cart']);

if ($_SESSION['cart']) { 
   foreach ($_SESSION['cart'] as $isbn => $qty){  

   echo "$isbn $qty<br>";
   echo $_SESSION['cart'];
   //print_r($_SESSION['cart']); 



   }

} else { 
   echo "No cart array!"; 
} 

   //header ("Location: ./");

}
ob_end_flush();
?>

If i uncomment print_r($_SESSION['cart']); it displays

Array ( [53] => 1 )

however if i comment it out and instead

echo $_SESSION['cart'];

i dont get anything ecept the word "Array".
Any ideas why this is so?

Cheers,
micmac

[unstable_geek]

ooo...oooo... I can answer this one 🙂

Because [echo] is a language construct and not a function, it does not know how to handle complex datatypes.

print_r -- Prints human-readable information about a variable

print_r() displays information about a variable in a way that's readable by humans. If given a string, integer or float, the value itself will be printed.

If given an array, values will be presented in a format that shows keys and elements. Similar notation is used for objects.