Intelligence of parser when dealing with condition

[Raffles]

$foo = false;
$bar = true;
if ($foo && $bar) {
  doSomething();
} 

Since the order there is "if $foo AND $bar", does the parser stop processing the if statement when it concludes $foo is false, or will it also evaluate $bar regardless? If $foo is false, then it doesn't matter what $bar is, the whole statement resolves to false, so I wonder if the parser realises this.

I'd also be interested to know if this is the same for Javascript if anyone knows.

[Andrewaclt]

Yes, typically the parsers do, it's called short-circuit evaluation. I would assume almost all modern languages do it, including javascript. You can write code to test it easily, so why not try it?

[Raffles]

Oh yeah, if I make $bar a function that'll spit something out I can test it... didn't occur to me earlier. Cheers Andrew.