PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: system vs. shell_exec

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Result: Discarded

The test labeled "system()" was the faster by 0.0756 seconds, (8.176% faster)

system() 100%
shell_exec() 91.824%

The system() test took 0.8489 seconds.
The shell_exec() test took 0.9245 seconds.


Each test case ran 20 random code order iterations consisting of 222,155 loops for a total of 4,443,100 runs.

  • Line execution difference (0.000017) milliseconds.
  • Avg difference (3.779) milliseconds per 222,155 loops.
  • Total difference 75.59 milliseconds for 4,443,100 loops

The iteration variablity for Code 1 was (1.6413) milliseconds and Code 2 was (3.9382) 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 (