PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: Last Character

No Description

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Result: Discarded

The test labeled "$str[]" was the faster by 0.005 seconds, (0.877% faster)

$str[] 100%
substr() 99.123%

The $str[] test took 0.5632 seconds.
The substr() test took 0.5681 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 143,739 loops for a total of 2,874,780 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.249) milliseconds per 143,739 loops.
  • Total difference 4.98 milliseconds for 2,874,780 loops

The iteration variablity for Code 1 was (4.6383) milliseconds and Code 2 was (2.6034) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

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

for ($j = 0; $j < 1000; $j++)
	$GLOBALS['dummy2'] = substr($GLOBALS['dummy'], -1);

The second test, "$str[]", was:

for ($j = 0; $j < 1000; $j++)
	$GLOBALS['dummy2'] = $GLOBALS['dummy'][strlen($GLOBALS['dummy'])-1];

Running: Linux (x86_64:1 GB) PHP (7.2.25-1+ubuntu16.04.1+deb.sury.org+1)