PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: ob_start/ob_get_contents vs. concat

No Description

Run this test again Return to test menu

Historical Results

Based on (2) saved test runs, The test labeled "ob_start()" was (on average) the faster by 0.0173 seconds, (1.564% faster)

ob_start() 100%
concat 98.436%

The ob_start() test took 1.0861 seconds.
The concat test took 1.1034 seconds.


Each test case ran 20 random code order iterations consisting of 279,348 loops for a total of 5,586,960 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.000) milliseconds per 279,348 loops.
  • Total difference 17.26 milliseconds for 5,586,960 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.


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


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

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

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 (