PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: commas vs. interpolation on short strings

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Historical Results

Based on (1) saved test runs, The test labeled "interpolation" was (on average) the faster by 0.0027 seconds, (0.313% faster)

interpolation 100%
commas 99.687%

The interpolation test took 0.8727 seconds.
The commas test took 0.8754 seconds.


Each test case ran 20 random code order iterations consisting of 131,000 loops for a total of 2,620,000 runs.

  • Line execution difference (0.000001) milliseconds.
  • Avg difference (0.000) milliseconds per 131,000 loops.
  • Total difference 2.74 milliseconds for 2,620,000 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 (