PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: strftime vs. localtime

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Historical Results

Based on (1) saved test runs, The test labeled "strftime()" was (on average) the faster by 0.0095 seconds, (1.696% faster)

strftime() 100%
localtime() 98.304%

The strftime() test took 0.5478 seconds.
The localtime() test took 0.5572 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 134,832 loops for a total of 2,696,640 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.000) milliseconds per 134,832 loops.
  • Total difference 9.45 milliseconds for 2,696,640 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "strftime()", was:

for ($i = 0; $i < 100; $i++)
	$GLOBALS['dummy'] = (int) strftime('%d', $GLOBALS['t']);

The second test, "localtime()", was:

for ($i = 0; $i < 100; $i++)
{
	$temp = localtime($GLOBALS['t'], true);
	$GLOBALS['dummy'] = $temp['tm_mday'];
}

Running: Linux (x86_64:1 GB) PHP (7.2.25-1+ubuntu16.04.1+deb.sury.org+1)