PHP Benchmarks

Performance comparison of PHP code alternatives.

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.


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.


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


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


Running: Linux (x86_64:1 GB) PHP (