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 0.0011 seconds, (0.105% faster)

date() 100%
strftime() 99.895%

The date() test took 1.0292 seconds.
The strftime() test took 1.0303 seconds.


Each test case ran 20 random code order iterations consisting of 290,162 loops for a total of 5,803,240 runs.

  • Line execution difference (0.000000) milliseconds.
  • Avg difference (0.054) milliseconds per 290,162 loops.
  • Total difference 1.08 milliseconds for 5,803,240 loops

The iteration variablity for Code 1 was (2.0405) milliseconds and Code 2 was (1.2077) 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 (