PHP布尔值var错误[重复]

I wrote a login script, but it doesn't work: In this script I can't log in

if($_SESSION['logged'] == TRUE){
echo "logged in";
}

if($_POST['pass'] == "blabla"){
$_SESSION['logged'] = TRUE;
}

if($_GET['logout']){
$_SESSION['logged'] = FALSE;
}

</div>

This is not legal syntax for setting a variable

var1 === TRUE;

And nor is this

var2 == TRUE;

Use = to set a variable to a value.

The === and == are comparison tests not value assignments.

This is also not going to do a test

if($var1 = TRUE){echo "3";}

it will set $var1 to be true, ditto the other 2 times you try this line for $var2 and $var3

Your first two lines are a comparison:

$var1 === TRUE;
$var2 == TRUE;

You want them to be a declaration

$var1 = TRUE;
$var2 = TRUE;