PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: === null vs. is_null

No Description

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Result: Discarded

The test labeled "is_null()" was the faster by 0.0476 seconds, (4.203% faster)

is_null() 100%
=== null 95.797%

The is_null() test took 1.0847 seconds.
The === null test took 1.1323 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 281,970 loops for a total of 5,639,400 runs.

  • Line execution difference (0.000008) milliseconds.
  • Avg difference (2.379) milliseconds per 281,970 loops.
  • Total difference 47.59 milliseconds for 5,639,400 loops

The iteration variablity for Code 1 was (6.0965) milliseconds and Code 2 was (3.2087) 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)