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Re: define ('NL', "<br />"); can I define a constant var ?

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On 1/22/2013 5:51 PM, Jørn Andersen wrote:
> On Tue, 22 Jan 2013 09:39:07 +0100, Arno Welzel <usenet@arnowelzel.de>
> wrote:
>
>> With variables this would be easier though:
>>
>> $NL = '<br />';
>> echo "This is $NL another line";
>
> A question from someone relatively new to PHP:
> Why use constants at all?
> I always use variables - have I missed something?
>
> Best,
> Jørn, Copenhagen
>

Actually, a more correct answer would be the same reason you use 
constants in any language.  They can't be changed.

You can get some very hard to find problems when something which is 
supposed to be a constant gets the wrong value.


-- 
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================

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define ('NL', "<br />");  can I define a constant var ? cate <catebekensail@yahoo.com> - 2013-01-21 16:06 -0800
  Re: define ('NL', "<br />");  can I define a constant var ? Adam Harvey <usenet@adamharvey.name> - 2013-01-22 00:44 +0000
    Re: define ('NL', "<br />");  can I define a constant var ? BobMCT <r.mariotti@fdcx.net> - 2013-01-21 21:16 -0500
      Re: define ('NL', "<br />");  can I define a constant var ? Kim André Akerø <kimandre@nospambetadome.com> - 2013-01-22 03:50 +0100
  Re: define ('NL', "<br />");  can I define a constant var ? denisb <newdb@no-log.org> - 2013-01-22 08:17 +0100
  Re: define ('NL', "<br />");  can I define a constant var ? Arno Welzel <usenet@arnowelzel.de> - 2013-01-22 09:39 +0100
    Re: define ('NL', "<br />");  can I define a constant var ? Luuk <luuk@invalid.lan> - 2013-01-22 19:43 +0100
      Re: define ('NL', "<br />");  can I define a constant var ? Tim Streater <timstreater@greenbee.net> - 2013-01-22 18:58 +0000
        Re: define ('NL', "<br />");  can I define a constant var ? Luuk <luuk@invalid.lan> - 2013-01-22 20:08 +0100
          Re: define ('NL', "<br />");  can I define a constant var ? "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-01-23 01:35 +0100
          Re: define ('NL', "<br />");  can I define a constant var ? Arno Welzel <usenet@arnowelzel.de> - 2013-01-23 10:59 +0100
        Re: define ('NL', "<br />");  can I define a constant var ? The Natural Philosopher <tnp@invalid.invalid> - 2013-01-22 19:40 +0000
      Re: define ('NL', "<br />");  can I define a constant var ? Arno Welzel <usenet@arnowelzel.de> - 2013-01-23 10:55 +0100
    Re: define ('NL', "<br />");  can I define a constant var ? Jørn Andersen <jorn@jorna.dk> - 2013-01-22 23:51 +0100
      Re: define ('NL', "<br />");  can I define a constant var ? Shake <alex.estevezQUENO@QUENOfilnet.es> - 2013-01-23 00:08 +0100
        Re: define ('NL', "<br />");  can I define a constant var ? Jørn Andersen <jorn@jorna.dk> - 2013-01-23 00:51 +0100
          Re: define ('NL', "<br />");  can I define a constant var ? "Peter H. Coffin" <hellsop@ninehells.com> - 2013-01-22 19:03 -0600
          Re: define ('NL', "<br />");  can I define a constant var ? Shake <alex.estevezQUENO@QUENOfilnet.es> - 2013-01-23 03:42 +0100
      Re: define ('NL', "<br />");  can I define a constant var ? Jerry Stuckle <jstucklex@attglobal.net> - 2013-01-22 19:50 -0500

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