Hi, I am curious if there is a difference in installing either version. I believe my current codes are written with php4 (php_mode). Thanks! -newbie
You should use php5 if you can, most code doesn't require changing if it was written for 4 and you use 5, problems only arrise when code is written for 5 and you want to use it with 4.
I suggest you use PHP 5 too. As I mentioned in some different post, it has a better object model, is way faster and handles XML via it's DOM better than PHP4 and its domxml.
Before you up and upgrade check out php.net/manual/en/migration5.php . There are changes that could require you to make small code changes. Now if you do upgrade and you use OO you will see a small speed increase.
I agree but, this will be visible only in benchmark tests, i doubt that your site visitor will see any difference.
Yeah it would just come down to supporting more visitors a day on the same machine. So just less resources being consumed