PHP应用程序全局变量

Question

I want to store a global variable that exist as long as the application is running and accessible from all the sessions. I tried $GLOBALS but it's not durable. It's temporary, I store the data and when I request the same code again, it says that this index not recognised.

Will I have to store my value in a file?

Edit :: this is a sample code that always print 'not set'

if(isset($GLOBALS['myindex']){
   echo 'set';
   echo $GLOBALS['myindex'];
}else{
   echo 'not set';
   $GLOBALS['myindex']='myValue';
}

Answer 1

Best would be to go with Sessions:

Make sure you add session_start(); at the beginning of the application and it stays throughout the pages. Now you can assign the value to it. via :

 $_SESSION['yourkey'] = 'yourvalue'; // you can access it throughout the application