pass variables to functions

[walexman]

In php i've found that I cant seem to access global variables from within a function. Is there a way to access variables in a function that are in the same scope that the function is??? Can you make a variable global or something? How does that all work in PHP, is there a doc somewhere to explain? Can I define a global within a function in php?

[BlueSkyIS]

to retrieve an external global variable, declare the variable global from within the function:

 

$somevar = 1.234;

function abcdefg() {
    global $somevar;

    // $somevar here is the same as the global one.

}

[otuatail]

You can have a session variable if you want to access it anywhere, but you can pass variables to a function

 

myfunction($cats, $dogs);

 

Desmond.

[walexman]

how do I declare a session variable? Do I have to use global $variable within a function in order to access a global variable within a function as well?

[Orio]

About variables' scope and global variables, read here.

About session variables, you need to call session_start() at every page you want to use the session variables, and then you store the session data in the $_SESSION array. More info here.

 

Orio.