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.

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Result: Discarded

The test labeled "unpack()" was the faster by 0.0824 seconds, (6.309% faster)

unpack() 100%
ord() 93.691%

The unpack() test took 1.2241 seconds.
The ord() test took 1.3066 seconds.


Each test case ran 20 random code order iterations consisting of 291,524 loops for a total of 5,830,480 runs.

  • Line execution difference (0.000014) milliseconds.
  • Avg difference (4.122) milliseconds per 291,524 loops.
  • Total difference 82.43 milliseconds for 5,830,480 loops

The iteration variablity for Code 1 was (11.3283) milliseconds and Code 2 was (6.4429) 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 (