--------------------------------------
|        PHP BENCHMARK SCRIPT        |
--------------------------------------
Start : 2015-12-18 07:44:04
PHP version : 7.0.1
Platform : Linux
--------------------------------------
test_math                 : 0.445 sec.
test_stringmanipulation   : 0.568 sec.
test_loops                : 0.437 sec.
test_ifelse               : 0.487 sec.
--------------------------------------
Total time:               : 1.937 sec.

사용된 스크립트는 http://www.php-benchmark-script.com/

--------------------------------------
|        PHP BENCHMARK SCRIPT        |
--------------------------------------
Start : 2015-12-18 16:44:07
PHP version : 5.2.16
Platform : Linux
--------------------------------------
test_math                 : 2.362 sec.
test_stringmanipulation   : 2.248 sec.
test_loops                : 2.042 sec.
test_ifelse               : 2.129 sec.
--------------------------------------

Total time:               : 8.781 sec.

운영중인 서버에 php 5.3에서 테스트하니 13초가 넘는군요.