PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: ord v. unpack (int keys)

This test uses the more normal unpack format syntax vs. manual ord() calls.

View test history (2) Run this test again Return to test menu

Result: Saved

The test labeled "ord()" was the faster by 0.0534 seconds, (4.568% faster)

ord() 100%
unpack() 95.432%

The ord() test took 1.1158 seconds.
The unpack() test took 1.1692 seconds.


Each test case ran 20 random code order iterations consisting of 284,745 loops for a total of 5,694,900 runs.

  • Line execution difference (0.000009) milliseconds.
  • Avg difference (2.670) milliseconds per 284,745 loops.
  • Total difference 53.41 milliseconds for 5,694,900 loops

The iteration variablity for Code 1 was (5.9084) milliseconds and Code 2 was (5.8422) milliseconds. The lower and the closer together there values are the more accurate the results are.


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

$GLOBALS['dummy'] = array(
	0 => ord($GLOBALS['packed']{0}),
	1 => ord($GLOBALS['packed']{1}),
	2 => ord($GLOBALS['packed']{2}),
	3 => ord($GLOBALS['packed']{3}),

The second test, "unpack()", was:

$GLOBALS['dummy'] = unpack('C4', $GLOBALS['packed']);

Running: Linux (x86_64:1 GB) PHP (