PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: time vs. microtime(true)

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Result: Discarded

The test labeled "microtime(true)" was the faster by 0.0181 seconds, (1.425% faster)

microtime(true) 100%
time() 98.575%

The microtime(true) test took 1.2532 seconds.
The time() test took 1.2713 seconds.


Each test case ran 20 random code order iterations consisting of 287,182 loops for a total of 5,743,640 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.906) milliseconds per 287,182 loops.
  • Total difference 18.11 milliseconds for 5,743,640 loops

The iteration variablity for Code 1 was (14.0009) milliseconds and Code 2 was (14.2565) milliseconds. The lower and the closer together there values are the more accurate the results are.


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

for ($i = 0; $i < 100; $i++)
	$GLOBALS['dummy'] = time();

The second test, "microtime(true)", was:

for ($i = 0; $i < 100; $i++)
	$GLOBALS['dummy'] = microtime(true);

Running: Linux (x86_64:1 GB) PHP (