PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: ob_start/ob_get_contents vs. concat

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Historical Results

Based on (78) saved test runs, The test labeled "ob_start()" was (on average) the faster by 0.0103 seconds, (1.325% faster)

ob_start() 100%
concat 98.675%

The ob_start() test took 0.7653 seconds.
The concat test took 0.7756 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 188,364 loops for a total of 3,767,288 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.000) milliseconds per 188,364 loops.
  • Total difference 10.27 milliseconds for 3,767,288 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, "ob_start()", was:

ob_start();

for ($i = 0; $i < 100; $i++)
	echo 'Wheat Thins!';

$GLOBALS['dummy'] = ob_get_contents();
ob_end_clean();

The second test, "concat", was:

$value = '';
for ($i = 0; $i < 100; $i++)
	$value .= 'Wheat Thins!';

$GLOBALS['dummy'] = $value;

Running: Linux (x86_64:1 GB) PHP (7.2.15-1+ubuntu16.04.1+deb.sury.org+1)