PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: === null vs. == null

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Result: Discarded

The test labeled "== null" was the faster by 0.0836 seconds, (10.962% faster)

== null 100%
=== null 89.038%

The == null test took 0.6787 seconds.
The === null test took 0.7622 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 132,815 loops for a total of 2,656,300 runs.

  • Line execution difference (0.000031) milliseconds.
  • Avg difference (4.178) milliseconds per 132,815 loops.
  • Total difference 83.55 milliseconds for 2,656,300 loops

The iteration variablity for Code 1 was (7.7848) milliseconds and Code 2 was (6.7487) 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, "== null", was:

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

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