Vaiables between two functions

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December 21st, 2012, 01:52 PM

mallen

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Vaiables between two functions

Is there a way to use a variable like a global variable between two functions?

PHP Code:


		
			
function get_folders () {

if ($handle = opendir('products')) {

$blacklist = array('.','..','products', 'index.php');

while (false !== ($file = readdir($handle))) {

         if (!in_array($file, $blacklist)) {

echo '<a href=/products_list.php?folder=' . $file . '&'. 'pdf=' . '/>'. strtoupper($file) . '</a>'. '<br/>';



         }

}

closedir($handle);

}

}

function get_products() {

//if ($handle = opendir('products/category1/product1')) { <<Remove this

if ($handle = opendir($file)) {  <<try this

$blacklist = array('.','..','index.php');

while (false !== ($product = readdir($handle))) {

         if (!in_array($product, $blacklist)) {

echo '<a href=/products_list2.php?folder=' . $product . '&'. 'pdf=' . '/>'. strtoupper($product) . '</a>'. '<br/>';



         }

}

closedir($handle);

}

}

I was trying something like this but get a message of bool(false) outside of the function I have :
global $file;

PHP Code:


		
			
if ($handle= opendir($GLOBALS['file']))

Last edited by mallen : December 21st, 2012 at 02:03 PM.

December 21st, 2012, 01:58 PM

gw1500se

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You could define a class to manage the IO then you don't have to worry about globals.

P.S. Please use [ PHP ] tags for your code (see the sticky at the top of this forum).

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December 21st, 2012, 02:03 PM

Jacques1

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Hi,

the correct way of passing values to a function is by using the parameters:

PHP Code:


		
			
function square($x) {

    return $x * $x;

}



echo square(3);

I know that PHP people looove global variables. But pulling values from some global scope should be an exception, not the rule.

December 21st, 2012, 02:05 PM

mallen

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What does IO mean?

Quote:

Originally Posted by gw1500se

You could define a class to manage the IO then you don't have to worry about globals.

P.S. Please use [ PHP ] tags for your code (see the sticky at the top of this forum).

December 21st, 2012, 02:07 PM

ManiacDan

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I/O is inputs/outputs.

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Vaiables between two functions

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