Performance -- Eval vs Include

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  • */hack/*
    #1

    Performance -- Eval vs Include

    For those of you that have tested eval() vs. including a file many times,
    I'd appreciate your comments on which one is better for performance.
    My application will have a queue like routine in which I may have to include
    a file many time. The file will contain a series of switch/case statements.
    Depending on specified criteria, this file will need to be processed from
    one time up to X times. I am not really worried about the usual case where
    the file will be included less than 3-5 times in one request, however, above
    that I have to wonder where to save on performance.

    Those of you writing parsers are probably moreso in the know on this one,
    however, anyone else that has a clue please feel free to add your 2c.

    Thanks,

    -Laidbak


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    • noSpam
      #2
      Re: Performance -- Eval vs Include

      */hack/* wrote:[color=blue]
      > For those of you that have tested eval() vs. including a file many times,
      > I'd appreciate your comments on which one is better for performance.
      > My application will have a queue like routine in which I may have to include
      > a file many time. The file will contain a series of switch/case statements.
      > Depending on specified criteria, this file will need to be processed from
      > one time up to X times. I am not really worried about the usual case where
      > the file will be included less than 3-5 times in one request, however, above
      > that I have to wonder where to save on performance.
      >
      > Those of you writing parsers are probably moreso in the know on this one,
      > however, anyone else that has a clue please feel free to add your 2c.
      >
      > Thanks,
      >
      > -Laidbak
      >
      >[/color]
      file operations are expensive - keep them to a minimum, mind you so is
      eval. Sounds like a design problem

        Comment

        • Michael Fesser
          #3
          Re: Performance -- Eval vs Include

          .oO(*/hack/*)
          [color=blue]
          >For those of you that have tested eval() vs. including a file many times,
          >I'd appreciate your comments on which one is better for performance.[/color]

          I try to avoid eval() whenever possible. Sometimes it may look like the
          most simple solution, but in most cases there's a much better and faster
          way to do something.
          [color=blue]
          >My application will have a queue like routine in which I may have to include
          >a file many time.[/color]

          The same file? Sounds bad. Including a file _one_ time is more than
          enough. Consider to use functions.

          Micha

            Comment

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