Accessing global variables

[muthukrishnan]

HI how to access global variable across files in php.

i am currently working on an application, where i need to take a value from one file to another.. It cannot be obtained through get or post method since it takes some two or three files to render the next view from the form window.

Eg:From the login page it executes four pages to render the next view page


Here, i need to take a value from the second to third page. How can i do it.

I gave in the second file as global $username;

in third file how to access the global variable declared in file2 in file3..

thanks in advance.

Regards,
muthu

[mudshark]

You could use sessions to carry the values across multiple pages.

[7stud]

Put this at the top of the page that first receives the data you want to save:

<?php
session_start();
?>

Warning: there cannot be any spaces or blank lines before that opening php tag. In other words, it has to be at the very top of the file.

Then anywhere on the page, insert the data you want to save into the $_SESSION[] array:

$_SESSION['someVarName'] = 'some data'; 

Whenever you are on another page and you want to add more data to the $_SESSION[] array or retrieve information from the array, at the top of the page put:

<?php 
session_start();
?>

and then you can freely access the array, e.g.

echo $_SESSION['someVarName']; 

[muthukrishnan]

Thanks Guys.. for you support..