PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: commas vs. concat on long strings

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Historical Results

Based on (1) saved test runs, The test labeled "concat" was (on average) the faster by 0.0042 seconds, (0.431% faster)

concat 100%
commas 99.569%

The concat test took 0.9717 seconds.
The commas test took 0.9759 seconds.


Each test case ran 20 random code order iterations consisting of 262,924 loops for a total of 5,258,480 runs.

  • Line execution difference (0.000001) milliseconds.
  • Avg difference (0.000) milliseconds per 262,924 loops.
  • Total difference 4.20 milliseconds for 5,258,480 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, "concat", was:

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

Running: Linux (x86_64:1 GB) PHP (