PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: commas vs. interpolation on short strings

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Historical Results

Based on (2) saved test runs, The test labeled "commas" was (on average) the faster by 0.0174 seconds, (3.041% faster)

commas 100%
interpolation 96.959%

The commas test took 0.5533 seconds.
The interpolation test took 0.5706 seconds.


Each test case ran 20 random code order iterations consisting of 130,605 loops for a total of 2,612,090 runs.

  • Line execution difference (0.000007) milliseconds.
  • Avg difference (0.000) milliseconds per 130,605 loops.
  • Total difference 17.35 milliseconds for 2,612,090 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, "commas", was:

echo $GLOBALS['x'], ' test ', $GLOBALS['y'], $GLOBALS['z'], ' test ';

The second test, "interpolation", was:

echo "$GLOBALS[x] test $GLOBALS[y]$GLOBALS[z] test ";

Running: Linux (x86_64:1 GB) PHP (