PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: (int) vs. settype

If you already have a variable, logic tells us that changing is type might be faster than creating a new value (which a cast does.) But, is this true?

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Historical Results

Based on (3) saved test runs, The test labeled "(int)" was (on average) the faster by 0.0229 seconds, (2.020% faster)

(int) 100%
settype() 97.98%

The (int) test took 1.1096 seconds.
The settype() test took 1.1325 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 284,107 loops for a total of 5,682,147 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.000) milliseconds per 284,107 loops.
  • Total difference 22.88 milliseconds for 5,682,147 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

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

for ($j = 0; $j < 100; $j++)
{
	$i = '42 ';
	$i = (int) $i;
}

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

for ($j = 0; $j < 100; $j++)
{
	$i = '42 ';
	settype($i, 'int');
}

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