PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: date vs. strftime

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Result: Discarded

The test labeled "date()" was the faster by 0.0273 seconds, (4.857% faster)

date() 100%
strftime() 95.143%

The date() test took 0.5342 seconds.
The strftime() test took 0.5615 seconds.


Each test case ran 20 random code order iterations consisting of 138,803 loops for a total of 2,776,060 runs.

  • Line execution difference (0.000010) milliseconds.
  • Avg difference (1.364) milliseconds per 138,803 loops.
  • Total difference 27.27 milliseconds for 2,776,060 loops

The iteration variablity for Code 1 was (3.4440) milliseconds and Code 2 was (3.1647) milliseconds. The lower and the closer together there values are the more accurate the results are.


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

for ($i = 0; $i < 100; $i++)
	$GLOBALS['dummy'] = date('Y-m-d \\a\\t H:i:s', $GLOBALS['t']);

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

for ($i = 0; $i < 100; $i++)
	$GLOBALS['dummy'] = strftime('%Y-%m-%d at %H:%M:%S', $GLOBALS['t']);

Running: Linux (x86_64:1 GB) PHP (