PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: === null vs. is_null

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Result: Discarded

The test labeled "=== null" was the faster by 0.0159 seconds, (3.101% faster)

=== null 100%
is_null() 96.899%

The === null test took 0.4966 seconds.
The is_null() test took 0.5125 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 129,914 loops for a total of 2,598,280 runs.

  • Line execution difference (0.000006) milliseconds.
  • Avg difference (0.795) milliseconds per 129,914 loops.
  • Total difference 15.89 milliseconds for 2,598,280 loops

The iteration variablity for Code 1 was (2.2986) milliseconds and Code 2 was (2.9399) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "=== null", was:

for ($j = 0; $j < 100; $j++)
{
	$GLOBALS['dummy3'] = $GLOBALS['dummy1'] === null;
	$GLOBALS['dummy3'] += $GLOBALS['dummy2'] === null;
}

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

for ($j = 0; $j < 100; $j++)
{
	$GLOBALS['dummy3'] = is_null($GLOBALS['dummy1']);
	$GLOBALS['dummy3'] += is_null($GLOBALS['dummy2']);
}

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