Simple problem with variable scope.

[AbydosGater]

Hey guys,

Been awhile since i have had time to do any php but this is driving me mad.

 

I am setting two variables $comPost and $comAction.. Now if i echo these right after declaration, they work fine.

But inside the displayForm() function, if i set them as global they will not echo, but if i set any other predefined variable as global they work.

 

Code:

<?php
$args = explode('/', $params);
$comPost = $args[0];
$comAction = $args[1];
echo "/".$comPost.":".$comAction."/"; // This echos correctly.
function displayForm()
{
global $comPost, $comAction;
echo "displayForm()";
echo "<br />";
echo "/".$comPost.":".$comAction."/"; //This doesnt show the variables?
}
displayForm();
?>

 

Anyone know why, even though the variables are global they dont work inside the function?

 

Thanks for reading,

Andy

[kenrbnsn]

I just tried your code and it works fine for me...

 

Why don't you just pass the variables into the function, instead of using the global?

 

<?php
$args = explode('/', $params);
$comPost = $args[0];
$comAction = $args[1];
echo "/".$comPost.":".$comAction."/"; // This echos correctly.
function displayForm($comPost,$comAction)
{
echo "displayForm()";
echo "<br />";
echo "/".$comPost.":".$comAction."/"; //This doesnt show the variables?
}
displayForm();
?>

 

Ken

[AbydosGater]

Yeah i was thinking about doing that,

Just an easy work around, but i was still wondering why it wasnt declaring the variables global.

 

It works with any other variable i have predefined.. Like if i declare $config as global i can echo that.

 

But just before if i set $myVar = "test"; and global it inside the function it doesnt recognise it either.

 

Find it odd. you say it works for you?

Maybe something in the settings?

 

Andy