Test: defined vs. isset
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View test history (3) Run this test again Return to test menuResult: Discarded
The test labeled "defined()" was the faster by 0.0176 seconds, (1.535% faster)
The defined() test took 1.1292 seconds.
The isset() test took 1.1468 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 282,207 loops for a total of 5,644,140 runs.
- Line execution difference (0.000003) milliseconds.
- Avg difference (0.880) milliseconds per 282,207 loops.
- Total difference 17.60 milliseconds for 5,644,140 loops
The iteration variablity for Code 1 was (5.9738) milliseconds and Code 2 was (4.9215) 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']);