PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: ob_start/ob_get_contents vs. concat

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Result: Discarded

The test labeled "concat" was the faster by 0.1462 seconds, (8.218% faster)

concat 100%
ob_start() 91.782%

The concat test took 1.6333 seconds.
The ob_start() test took 1.7795 seconds.


Each test case ran 20 random code order iterations consisting of 291,828 loops for a total of 5,836,560 runs.

  • Line execution difference (0.000025) milliseconds.
  • Avg difference (7.312) milliseconds per 291,828 loops.
  • Total difference 146.25 milliseconds for 5,836,560 loops

The iteration variablity for Code 1 was (16.7418) milliseconds and Code 2 was (20.3883) 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 (