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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Historical Results

Based on (1) saved test runs, The test labeled "ord()" was (on average) the faster by 0.012 seconds, (2.600% faster)

ord() 100%
unpack() 97.4%

The ord() test took 0.448 seconds.
The unpack() test took 0.46 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 130,755 loops for a total of 2,615,100 runs.

  • Line execution difference (0.000005) milliseconds.
  • Avg difference (0.000) milliseconds per 130,755 loops.
  • Total difference 11.96 milliseconds for 2,615,100 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.

Code

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 (7.2.25-1+ubuntu16.04.1+deb.sury.org+1)