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Thread: how to change a CONSTANT defined in a class file?

  1. #1
    Join Date
    May 2005
    Posts
    16

    how to change a CONSTANT defined in a class file?

    Hi, I have the folowing php question:
    I have 3 files:

    the file a.php wich includes this php class: [ include "b.php"; ] (and more code...)
    the file b.php wich includes this other php class: [ require_once("c.php"); ] (and other functions of course...)
    and the file c.php wich has this definition: [ define('MAX_CUPS', 148); ] (and other definitions...)

    My question is how can I overwrite the defined "MAX_CUPS" value for instance if I need sometimes 148, sometimes 400, sometimes 800, etc.
    How cai I set this "MAX_CUPS" value again from the a.php file without having to edit the c.php file?
    I read that "A constant's value cannot be changed after it is set", but im triying to get help with this issue...

    Thanks indvance.

    Aldo.

  2. #2
    Join Date
    Aug 2004
    Location
    Ankh-Morpork
    Posts
    22,283
    By definition, a constant is "constant". If you need it to be programatically variable, guess what? You need to use a variable, instead. So, if you want it to be variable, then you probably should redefine it as a variable instead of a constant in c.php.
    "Well done....Consciousness to sarcasm in five seconds!" ~ Terry Pratchett, Night Watch

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  3. #3
    Join Date
    May 2005
    Posts
    16
    this is a typical sample of code in a.php, so as you can see there are nothing to edit or there are no variables to redefine, because i dont know where in the b.php its calling the 'MAX_CUPS' defined in the c.php
    and i cannot edit the b.php and c.php because they are zend optimized.
    a question, zend is only a ctypter or it optimizes the runtime too?

    Code:
    <?php
    include "b.php";
    $cups = new cupsCreator();
    $cups->cupsSpec('MyCup1',0,0,120);
    $cups->cupsParse();
    ?>
    Aldo

  4. #4
    Join Date
    Aug 2004
    Location
    Ankh-Morpork
    Posts
    22,283
    Is there some reason you cannot edit the c.php file?

    EDIT: Sorry, brain's a bit slow today - the explanation about the optimization didn't register on me for some reason.
    Last edited by NogDog; 06-14-2006 at 12:04 PM.
    "Well done....Consciousness to sarcasm in five seconds!" ~ Terry Pratchett, Night Watch

    How to Ask Questions the Smart Way (not affiliated with this site, but well worth reading)

    My Blog
    cwrBlog: simple, no-database PHP blogging framework

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