In this quick post to her site, Lorna Mitchell shares some of the benchmark results she found when doing some tests with the latest version of PHP - 5.4.

Today I'm giving my first ever talk at OSCON - about PHP 5.4 (I'll also be giving my second ever talk at OSCON, about RESTful services; it's a busy day!). My talk includes some benchmarks which I thought I'd also share here. [...] This graph shows the performance of four versions of PHP (because the bench.php script that lives in the php source tree didn't appear until 5.1). The axis up the left is the time it took to run the benchmark script - so a smaller number is better news.

You can see a dramatic difference between even just the latest in the PHP 5.3.x series in the 5.4 results. There's also a table with the details of each of her 10 executions of the "bench.php" script showing the results of the time spent to run the script on four different PHP versions.