does declaration affect performance?

[rainielle73]

Hi! I know that in PHP, I can use any variable I want without worrying if it was previously declared or not. However, I am wondering if declaring a variable before using it uses more resources than using it right away. Like ff:

Code 1:

var $hello;

$hello+=1;

As compared to Code 2:

$hello+=1;

Thanks!

[trq]

Firstly, you can't declare variables using the [i]var[/i] keyword unless you are within a class. Secondly, this type of question really isn't worth worrying about.