Numeric arrays revisited

at 2005-06-12 in General by kiesel (0 comments)

In Numeric arrays Timm has compared various array access methods in regard to their speed for quite a common task.

While that was really interesting and certainly will have affect on the different connectors we have to other languages (SOAP, xmlrpc, ...), I missed one special method: the fastest

Not surprisingly, the fastest array access can be done in PHP's native language C. However, standard PHP does not have exactly the method we need, so I took it as an exercise, programmed one, and called it array_is_numeric() (see the implementation in this patch).

After compiling PHP (it's PHP4_4 from CVS), I added a new strategy to Timm's isnumeric.php:

#6: Use native array access

    class BuiltinStrategy extends Object {
    
    function execute($a) {
      return array_is_numeric($a);
    }
  }

Not suprisingly, the native array access strategy outperforms all others, no matter what size the array to check really is.

See the detailled test results here.

PS: This does not only prove that C is faster than PHP, but also another thing: my machine is faster than Timm's

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