PHP variables

[ryan.od]

How does PHP treat variables? What I mean is, if I set $auth = 1 in one script and then set $auth = 0 in another script, which value does the site recognize as the true value? Is each $auth unique to it's script (local) or are variables in PHP such as the $auth variable I am using global?

Thanks.

ryanod

[roopurt18]

It depends on if the scripts include one another or what other pages include those scripts.

[jwk811]

on one of my scripts it just goes in order like if $var is first in the script that will have the value assigned to it until you get to $var = farther down and that will have a new value for the rest of the script (unless its changed again)

[Skatecrazy1]

Okay so basically, it's how jwk811 put it, but theres a little more to it.  To put it clearly:

let's say i have a variable named $str.

up at the top of my file, $str = "Eric Cartman";

let's say I want to change the value of $str later in my script:  $str = "Stan Marsh";

but also, using the "." operator, i could add things to a string: $str .= " and Kenny McCormick";

which would echo "Eric Cartman and Kenny McCormick"

plus, if you include a file that contains a variable in another file, the variable is accessible in the file you included it to.