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 "ob_start()" was the faster by 0.0157 seconds, (3.380% faster)

ob_start() 100%
concat 96.62%

The ob_start() test took 0.4501 seconds.
The concat test took 0.4658 seconds.


Each test case ran 20 random code order iterations consisting of 130,419 loops for a total of 2,608,380 runs.

  • Line execution difference (0.000006) milliseconds.
  • Avg difference (0.787) milliseconds per 130,419 loops.
  • Total difference 15.75 milliseconds for 2,608,380 loops

The iteration variablity for Code 1 was (0.1655) milliseconds and Code 2 was (1.0058) 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 (