[SOLVED] Question regarding sessions

[Michdd]

On some popular tutorial sites I've seen something like this as an example for using a session:

 

<?php
session_start();  
if(isset($_SESSION['views']))
    $_SESSION['views'] = $_SESSION['views']+ 1;
else
    $_SESSION['views'] = 1;

echo "views = ". $_SESSION['views']; 
?>

 

Does that mean with sessions you can't use { } For example would this be the same?

 

<?php
session_start();  
if(isset($_SESSION['views'])) {
    $_SESSION['views'] = $_SESSION['views']+ 1;
} else {
    $_SESSION['views'] = 1;
}
echo "views = ". $_SESSION['views']; 
?>

[genericnumber1]

It's the same, yes, but it has nothing to do with sessions. You aren't required to use braces - {} - in a while/if/etc statement if the contained statement is only one statement long. Braces are actually seen as grouping multiple statements into one statement.

 

if(condition)
   statement;
else
   statement;

for(condition) statement;

is equivalent in all cases to

if(condition) {
   statement;
} else {
   statement;
}

for(condition) { statement; }

but you can not do, for instance...

if(condition)
   statement 1;
   statement 2;
else
   statement 1;
   statement 2;

because this is two statements, you must group them into 1 with braces

if(condition) {
   statement 1;
   statement 2;
} else {
   statement 1;
   statement 2;
}

 

I always use braces because it makes debugging easier (I can stick things into if statements without worrying about statement counts), and because it seems easier to read to me... but that's just my personal choice.

[Michdd]

Thanks, I think I'll stick to using braces, because I'm used to it, and as you said, it's easier to debug. I do have one more question about sessions. Because I haven't used them before. If I start a session so I have to put session_start(); on the begging on every page? Or if it's on say index.php do I have to put it on somepage.php or will it be passed automatically?

[wildteen88]

Any page that uses sessions must have session_start() at the beginning of the script.