PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: system vs. shell_exec

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Historical Results

Based on (2) saved test runs, The test labeled "system()" was (on average) the faster by 0.008 seconds, (1.282% faster)

system() 100%
shell_exec() 98.718%

The system() test took 0.6172 seconds.
The shell_exec() test took 0.6252 seconds.


Each test case ran 20 random code order iterations consisting of 159,940 loops for a total of 3,198,790 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.000) milliseconds per 159,940 loops.
  • Total difference 8.01 milliseconds for 3,198,790 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) 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 (