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 0.0142 seconds, (1.379% faster)

exec() 100%
shell_exec() 98.621%

The exec() test took 1.0183 seconds.
The shell_exec() test took 1.0325 seconds.


Each test case ran 20 random code order iterations consisting of 266,940 loops for a total of 5,338,800 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.712) milliseconds per 266,940 loops.
  • Total difference 14.24 milliseconds for 5,338,800 loops

The iteration variablity for Code 1 was (4.1690) milliseconds and Code 2 was (3.6888) 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 (