Result: Discarded
The test labeled "defined()" was the faster by 0.0203 seconds, (2.118% faster)
The defined() test took 0.939 seconds.
The isset() test took 0.9594 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 240,913 loops for a total of 4,818,260 runs.
- Line execution difference (0.000004) milliseconds.
- Avg difference (1.016) milliseconds per 240,913 loops.
- Total difference 20.32 milliseconds for 4,818,260 loops
The iteration variablity for Code 1 was (1.2009) milliseconds and Code 2 was (1.5557) milliseconds. The lower and the closer together there values are the more accurate the results are.
Code
The first test, "defined()", was:
$GLOBALS['test'] = defined('CONSTANT');
The second test, "isset()", was:
$GLOBALS['test'] = isset($GLOBALS['CONSTANT']);