Test: error_reporting(0) vs. @

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Result: Discarded

The test labeled "@ (shut up)" was the faster by 0.0384 seconds, (3.391% faster)

@ (shut up) 100%

error_reporting(0) 96.609%

The @ (shut up) test took 1.0936 seconds.
The error_reporting(0) test took 1.132 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 282,064 loops for a total of 5,641,280 runs.

Line execution difference (0.000007) milliseconds.
Avg difference (1.919) milliseconds per 282,064 loops.
Total difference 38.38 milliseconds for 5,641,280 loops

The iteration variablity for Code 1 was (5.4197) milliseconds and Code 2 was (6.2682) 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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