Updated string tests

I've updated my string tests to include HEREDOC, sprintf, and curly braces. It turns out that curly braces are actually slower than direct double quotes (at least in eval tests). And HEREDOC is far slower than " or ' for literal strings and slower than " when outputting variables. http://pear.reversefold.com/strings/ I ran these tests on PHP 5.0.5. If others like to run this on other PHP versions, please send me the output of the script as an HTML file and note what version of PHP, how you ran it (CLI/Apache/IIS), what operating system, and what speed/CPU your machine is. If you get results for any of the tests which is <1s (including the first literal tests) please increase $iterations. -- Justin Patrin