Test: exec vs. shell

Test: exec vs. shell_exec

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Result: Discarded

The test labeled "exec()" was the faster by 0.0146 seconds, (2.758% faster)

exec() 100%

shell_exec() 97.242%

The exec() test took 0.5161 seconds.
The shell_exec() test took 0.5307 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 136,677 loops for a total of 2,733,540 runs.

Line execution difference (0.000005) milliseconds.
Avg difference (0.732) milliseconds per 136,677 loops.
Total difference 14.64 milliseconds for 2,733,540 loops

The iteration variablity for Code 1 was (2.9270) milliseconds and Code 2 was (3.1552) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "exec()", was:

exec('ls');

The second test, "shell_exec()", was:

shell_exec('ls');

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