PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: system vs. shell_exec

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Result: Discarded

The test labeled "shell_exec()" was the faster by 0.022 seconds, (3.395% faster)

shell_exec() 100%
system() 96.605%

The shell_exec() test took 0.6269 seconds.
The system() test took 0.6489 seconds.


Each test case ran 20 random code order iterations consisting of 133,746 loops for a total of 2,674,920 runs.

  • Line execution difference (0.000008) milliseconds.
  • Avg difference (1.101) milliseconds per 133,746 loops.
  • Total difference 22.03 milliseconds for 2,674,920 loops

The iteration variablity for Code 1 was (7.1397) milliseconds and Code 2 was (5.2475) milliseconds. The lower and the closer together there values are the more accurate the results are.


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


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

echo shell_exec('ls');

Running: Linux (x86_64:1 GB) PHP (