PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: strftime vs. localtime

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Historical Results

Based on (3) saved test runs, The test labeled "strftime()" was (on average) the faster by 0.0135 seconds, (1.797% faster)

strftime() 100%
localtime() 98.203%

The strftime() test took 0.7378 seconds.
The localtime() test took 0.7513 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 196,424 loops for a total of 3,928,487 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.000) milliseconds per 196,424 loops.
  • Total difference 13.50 milliseconds for 3,928,487 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 (7.2.15-1+ubuntu16.04.1+deb.sury.org+1)