Test: defined vs. isset
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View test history (4) Run this test again Return to test menuResult: Discarded
The test labeled "isset()" was the faster by 0.0065 seconds, (0.877% faster)
The isset() test took 0.7376 seconds.
The defined() test took 0.7441 seconds.
Nitty-Gritty
Each test case ran 20 random code order iterations consisting of 192,930 loops for a total of 3,858,600 runs.
- Line execution difference (0.000002) milliseconds.
- Avg difference (0.326) milliseconds per 192,930 loops.
- Total difference 6.53 milliseconds for 3,858,600 loops
The iteration variablity for Code 1 was (2.2440) milliseconds and Code 2 was (1.3234) 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']);