TalkPHP - View Single Post - A little unclear about "global" keyword...

Village Idiot · 06-08-2008, 12:23 AM

It has to do with variable scopes. Look at the following code

PHP Code:


			
<?php
function seta()
{
    $a = "Hello There";
}

seta();
echo $a;
?>

That will output nothing because $a is not in a scope for the code outside the UDF to access. Now look at this code

PHP Code:


			
<?php
function seta()
{
    global $a = "Hello There";
}

seta();
echo $a;
?>

That code will echo the value that $a was assigned to in the function.

06-08-2008, 12:23 AM	#2 (permalink)
Village Idiot Wizard Join Date: Sep 2007 Posts: 1,299 Thanks: 17	It has to do with variable scopes. Look at the following code PHP Code: `<?php function seta() { $a = "Hello There"; } seta(); echo $a; ?>` That will output nothing because $a is not in a scope for the code outside the UDF to access. Now look at this code PHP Code: `<?php function seta() { global $a = "Hello There"; } seta(); echo $a; ?>` That code will echo the value that $a was assigned to in the function. __________________