Creating Dynamic Class Variables

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  • tjboudreaux
    #1

    Creating Dynamic Class Variables

    Hi,

    This might be a crazy question, but does anyone know how to add
    variables dynamically to a class. Here's what I want to do.

    I have a class Model, which I inherit for interfacing with database
    tables, much like a classic MVC pattern. I want to be able dynamically
    create a variable for each field in that table. This is sort of what I
    tried out http://pastebin.com/m3fed09a8


    I just need to know if there is a way to do what is on lines 8 - 10,
    and how that can be done.

    Thanks


    Travis
    Tags: None
    • FutureShock
      #2
      Re: Creating Dynamic Class Variables

      tjboudreaux wrote:
      Hi,
      >
      This might be a crazy question, but does anyone know how to add
      variables dynamically to a class. Here's what I want to do.
      >
      I have a class Model, which I inherit for interfacing with database
      tables, much like a classic MVC pattern. I want to be able dynamically
      create a variable for each field in that table. This is sort of what I
      tried out http://pastebin.com/m3fed09a8
      >
      >
      I just need to know if there is a way to do what is on lines 8 - 10,
      and how that can be done.
      >
      Thanks
      >
      >
      Travis
      Take a look at overloading using the __get and __set methods.

      PHP: Overloading - Manual
      http://www.php.net/manual/en/language.oop5.overloading.php
      Overloading


      Scotty

        Comment

        • BRADINO
          #3
          Re: Creating Dynamic Class Variables

          http://www.bradino.com/php/variable-variables/


            Comment

            • Oscar Arreyano
              #4
              Re: Creating Dynamic Class Variables


              "BRADINO" <brad@eduintera ctive.comwrote in message
              news:a62d110c-cb1e-42a3-bdcd-8d8b71a1d09b@n3 3g2000pri.googl egroups.com...
              http://www.bradino.com/php/variable-variables/
              that's not at all what he's asking about!


                Comment

                • Oscar Arreyano
                  #5
                  Re: Creating Dynamic Class Variables


                  "FutureShoc k" <futureshockx@a tt.netwrote in message
                  news:GDVCk.1776 $c45.424@nlpi06 5.nbdc.sbc.com. ..
                  tjboudreaux wrote:
                  >Hi,
                  >>
                  >This might be a crazy question, but does anyone know how to add
                  >variables dynamically to a class. Here's what I want to do.
                  >>
                  >I have a class Model, which I inherit for interfacing with database
                  >tables, much like a classic MVC pattern. I want to be able dynamically
                  >create a variable for each field in that table. This is sort of what I
                  >tried out http://pastebin.com/m3fed09a8
                  >>
                  >>
                  >I just need to know if there is a way to do what is on lines 8 - 10,
                  >and how that can be done.
                  >>
                  >Thanks
                  >>
                  >>
                  >Travis
                  >
                  Take a look at overloading using the __get and __set methods.
                  >
                  http://www.php.net/manual/en/languag...verloading.php
                  The overload will do no good as both __get and __set are ONLY called when a
                  NON-existing interface (property, function, etc.) is referenced by a caller.

                  To the op...why not use an array whose keys are the field names? Is there
                  some kind of validation you are going for if a caller changes a value? If
                  not, an array is the easiest to implement.


                    Comment

                    • FutureShock
                      #6
                      Re: Creating Dynamic Class Variables

                      Oscar Arreyano wrote:
                      "FutureShoc k" <futureshockx@a tt.netwrote in message
                      news:GDVCk.1776 $c45.424@nlpi06 5.nbdc.sbc.com. ..
                      >tjboudreaux wrote:
                      >>Hi,
                      >>>
                      >>This might be a crazy question, but does anyone know how to add
                      >>variables dynamically to a class. Here's what I want to do.
                      >>>
                      >>I have a class Model, which I inherit for interfacing with database
                      >>tables, much like a classic MVC pattern. I want to be able dynamically
                      >>create a variable for each field in that table. This is sort of what I
                      >>tried out http://pastebin.com/m3fed09a8
                      >>>
                      >>>
                      >>I just need to know if there is a way to do what is on lines 8 - 10,
                      >>and how that can be done.
                      >>>
                      >>Thanks
                      >>>
                      >>>
                      >>Travis
                      >Take a look at overloading using the __get and __set methods.
                      >>
                      >http://www.php.net/manual/en/languag...verloading.php
                      >
                      The overload will do no good as both __get and __set are ONLY called when a
                      NON-existing interface (property, function, etc.) is referenced by a caller.
                      >
                      To the op...why not use an array whose keys are the field names? Is there
                      some kind of validation you are going for if a caller changes a value? If
                      not, an array is the easiest to implement.
                      >
                      >
                      Yes you are right, I think an Array would be the better way, I had not
                      thought of that. He can assemble his list or variables, send them in one
                      lump sum and extract them in the class. I may have to play around with
                      that idea for a bit, may come in useful sometime.

                      Scotty

                        Comment

                        • Gordon
                          #7
                          Re: Creating Dynamic Class Variables

                          On Sep 25, 6:11 pm, tjboudreaux <tjboudre...@gm ail.comwrote:
                          Hi,
                          >
                          This might be a crazy question, but does anyone know how to add
                          variables dynamically to a class.  Here's what I want to do.
                          >
                          I have a class Model, which I inherit for interfacing with database
                          tables, much like a classic MVC pattern. I want to be able dynamically
                          create a variable for each field in that table. This is sort of what I
                          tried outhttp://pastebin.com/m3fed09a8
                          >
                          I just need to know if there is a way to do what is on lines 8 - 10,
                          and how that can be done.
                          >
                          Thanks
                          >
                          Travis
                          What about declaring an empty array in your class and storing
                          variables there as needed?

                            Comment

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