The PHP benchmarks covered earlier this week were Benchmarking The Performance Of PHP 5.5 and Facebook's HipHop 2.0 Virtual Machine Is Very Fast. The tests earlier this week found PHP 5.5 to be not too much better than PHP 5.4 when it comes to the performance and memory consumption in a stock configuration (when dealing with the new Zend Optimizer+ and other options, you will most likely be able to tweak additional gains).
With PHP 5.5 Beta 3, I happen to have some new benchmarks from this release on a different system. Benchmarks happened from a CompuLab Intense-PC with an Intel Core i7 3517UE and was running Ubuntu 13.04 with the Linux 3.8 kernel.
Here's the results (see the articles from earlier this week for more details on the tests):
PHP 5.5.0beta3 DETAILED_SYSTEM_INFO: 0.098 seconds LIST_AVAILABLE_TESTS: 0.331 seconds LIST_AVAILABLE_SUITES: 34.628 seconds INFO: 0.012 seconds CLONE_OPENBENCHMARKING_RESULT: 63.218 seconds RESULT_FILE_TO_TEXT: 6.977 seconds DIAGNOSTICS: 0.003 seconds DUMP_POSSIBLE_OPTIONS: 0.003 seconds ELAPSED TIME: 315.812 seconds PEAK MEMORY USAGE: 35 MB PEAK MEMORY USAGE (emalloc): 32.836 MB PHP 5.4.13 DETAILED_SYSTEM_INFO: 0.104 seconds LIST_AVAILABLE_TESTS: 0.356 seconds LIST_AVAILABLE_SUITES: 31.750 seconds INFO: 0.012 seconds CLONE_OPENBENCHMARKING_RESULT: 64.681 seconds RESULT_FILE_TO_TEXT: 6.985 seconds DIAGNOSTICS: 0.004 seconds DUMP_POSSIBLE_OPTIONS: 0.002 seconds ELAPSED TIME: 311.682 seconds PEAK MEMORY USAGE: 34.25 MB PEAK MEMORY USAGE (emalloc): 32.83 MB PHP 5.3.23 DETAILED_SYSTEM_INFO: 0.104 seconds LIST_AVAILABLE_TESTS: 0.333 seconds LIST_AVAILABLE_SUITES: 32.886 seconds INFO: 0.013 seconds CLONE_OPENBENCHMARKING_RESULT: 64.811 seconds RESULT_FILE_TO_TEXT: 7.086 seconds DIAGNOSTICS: 0.004 seconds DUMP_POSSIBLE_OPTIONS: 0.003 seconds ELAPSED TIME: 315.718 seconds PEAK MEMORY USAGE: 49.75 MB PEAK MEMORY USAGE (emalloc): 48.763 MB
Overall, for the Intel Core i7 "Ivy Bridge" system, there isn't much better performance with PHP 5.5 (Beta 3) over PHP 5.4 in this benchmark, similar to the results shown earlier this week. Meanwhile, Facebook's HipHop HHVM is a heck of a lot faster than any modern PHP release.
Details on PHP 5.5 Beta 3 along with download links can be found at PHP.net. Also released are PHP 5.4.14 and PHP 5.3.24.