PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: array_diff vs. ==

Is using array_diff() better than an == check?

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Result: Discarded

The test labeled "array_diff()" was the faster by 0.0221 seconds, (1.970% faster)

array_diff() 100%
== 98.03%

The array_diff() test took 1.1013 seconds.
The == test took 1.1235 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 287,872 loops for a total of 5,757,440 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (1.106) milliseconds per 287,872 loops.
  • Total difference 22.13 milliseconds for 5,757,440 loops

The iteration variablity for Code 1 was (4.5516) milliseconds and Code 2 was (6.4247) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

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

for ($n = 0; $n < 20; $n++)
	$GLOBALS['dummy2'] = count(array_diff($GLOBALS['dummy'], $GLOBALS['dummy_pass'], $GLOBALS['dummy_pass2'])) === 0;
for ($n = 0; $n < 20; $n++)
	$GLOBALS['dummy2'] = count(array_diff($GLOBALS['dummy'], $GLOBALS['dummy_fail'], $GLOBALS['dummy_fail2'])) === 0;

The second test, "==", was:

for ($n = 0; $n < 20; $n++)
	$GLOBALS['dummy2'] = $GLOBALS['dummy'] == $GLOBALS['dummy_pass'] && $GLOBALS['dummy'] == $GLOBALS['dummy_pass2'];
for ($n = 0; $n < 20; $n++)
	$GLOBALS['dummy2'] = $GLOBALS['dummy'] == $GLOBALS['dummy_fail'] && $GLOBALS['dummy'] == $GLOBALS['dummy_fail2'];

Running: Linux (x86_64:1 GB) PHP (7.2.34-8+ubuntu16.04.1+deb.sury.org+1)