Test: substr on short vs. long strings

No Description

View test history (3) Run this test again Return to test menu

Result: Discarded

The test labeled "short" was the faster by 0.0052 seconds, (0.913% faster)

short 100%

long (x200) 99.087%

The short test took 0.5637 seconds.
The long (x200) test took 0.5689 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 131,113 loops for a total of 2,622,260 runs.

Line execution difference (0.000002) milliseconds.
Avg difference (0.260) milliseconds per 131,113 loops.
Total difference 5.20 milliseconds for 2,622,260 loops

The iteration variablity for Code 1 was (3.1246) milliseconds and Code 2 was (2.1642) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "short", was:

for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy2'] = substr($GLOBALS['dummy_short'], 10, 10);

The second test, "long (x200)", was:

for ($j = 0; $j < 100; $j++)
	$GLOBALS['dummy2'] = substr($GLOBALS['dummy_long'], 10, 10);

PHP Benchmarks