Functions...

[alexjewell]

I'm using functions on a website I'm creating.
I'm curious if we can use if statements, etc in a function?
For example:

function my_function($yeah) {
   if (...) {....}
   elseif (...) {....}
   else {....}
} 

the periods obviously represent the content...

at any rate, is such a thing possible?
I have statements that repeat themselves, with just one part changing. so I figured if I could just call a function for it, I wouldn't have to keep rewriting the statements?

Thanks

[blm126]

Yes. That is the whole point of functions.

[mburt]

What is a function without statements?

[Twey]

Well... one of them

A note on elseif: don't use it. It's directly equivalent to a plain old else if, but designed especially for stupid people and lazy typists. Using it is a bad habit, and it doesn't exist in most languages anyway. Its existance in PHP is another indicator of what PHP has sacrificed to become a rapid-development language.

[mburt]

Wait a minute... I've used "if (...) {...}" many times over and not once, have I had to use an else if. What's "else if" for?

[Twey]

It's to do with braces. When only one statement is conditional, the braces are not necessary; for example,

if($var) $var = false;
else $othervar = true;

However, an if block is considered a single statement, so:

if($var1) {
  dog();
  cat();
} else if($var2) {
  bird();
  fish();
} else {
  fox();
  rabbit();
}

is equivalent to:

if($var1) {
  dog();
  cat();
} else {
  if($var2) {
    bird();
    fish();
  } else {
    fox();
    rabbit();
  }
}

[mburt]

Ah, I see. I get it now

[alexjewell]

Ok, thanks.

And from now on I'll use "else if"....
haha