Test: error_reporting(0) vs. @

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Result: Discarded

The test labeled "error_reporting(0)" was the faster by 0.0201 seconds, (3.085% faster)

error_reporting(0) 100%

@ (shut up) 96.915%

The error_reporting(0) test took 0.6318 seconds.
The @ (shut up) test took 0.6519 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 135,936 loops for a total of 2,718,720 runs.

Line execution difference (0.000007) milliseconds.
Avg difference (1.006) milliseconds per 135,936 loops.
Total difference 20.11 milliseconds for 2,718,720 loops

The iteration variablity for Code 1 was (4.7660) milliseconds and Code 2 was (3.1237) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "@ (shut up)", was:

$temp = 0;
@$GLOBALS[dummy]++;
$GLOBALS['dummy'] = $temp;

The second test, "error_reporting(0)", was:

$temp = error_reporting(0);
$GLOBALS[dummy]++;
error_reporting($temp);

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