PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: commas vs. interpolation on long strings

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Historical Results

Based on (5) saved test runs, The test labeled "commas" was (on average) the faster by 0.0125 seconds, (1.229% faster)

commas 100%
interpolation 98.771%

The commas test took 1.0033 seconds.
The interpolation test took 1.0158 seconds.


Each test case ran 20 random code order iterations consisting of 277,881 loops for a total of 5,557,620 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.000) milliseconds per 277,881 loops.
  • Total difference 12.48 milliseconds for 5,557,620 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 (