PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: exec vs. shell_exec

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Historical Results

Based on (1) saved test runs, The test labeled "exec()" was (on average) the faster by 0.0119 seconds, (2.041% faster)

exec() 100%
shell_exec() 97.959%

The exec() test took 0.5734 seconds.
The shell_exec() test took 0.5853 seconds.


Each test case ran 20 random code order iterations consisting of 161,599 loops for a total of 3,231,980 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.000) milliseconds per 161,599 loops.
  • Total difference 11.95 milliseconds for 3,231,980 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, "exec()", was:


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


Running: Linux (x86_64:1 GB) PHP (