PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: concat (string) vs. not

Is there any gain from casting to a string before concatenation?

Run this test again Return to test menu

Historical Results

Based on (2) saved test runs, The test labeled "(string)" was (on average) the faster by 0.0091 seconds, (1.122% faster)

(string) 100%
no cast 98.878%

The (string) test took 0.7993 seconds.
The no cast test took 0.8083 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 199,076 loops for a total of 3,981,510 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.000) milliseconds per 199,076 loops.
  • Total difference 9.07 milliseconds for 3,981,510 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, "(string)", was:

for ($j = 0; $j < 1000; $j++)
	$GLOBALS['dummy'] = 'good morning! ' . (string) $j . ' good night!';

The second test, "no cast", was:

for ($j = 0; $j < 1000; $j++)
	$GLOBALS['dummy'] = 'good morning! ' . $j . ' good night!';

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