How about const supporting array in future?

[Yarco]

Array is the very basic type in php i think. So why const keyword
doesn't support such defination grammar?

class Date
{
const char3 = array(1 ='Jan', ...); // ??
}

So how can i do somthing like c++'s enum?

class Data
{
const Jan = 1;
//...
}

is poor if i want to chanslate number to month name.

[Hendri Kurniawan]

On Aug 2, 12:55 pm, Yarco <[e-mail]:

Array is the very basic type in php i think. So why const keyword
doesn't support such defination grammar?

class Date
{
const char3 = array(1 ='Jan', ...); // ??

}

So how can i do somthing like c++'s enum?

class Data
{
const Jan = 1;
//...

}

is poor if i want to chanslate number to month name.

Well if you can't have const array, do a public static property
instead
class Data {
public static $MONTH_NAMES = array('January', ...);
}

Hendri Kurniawan

[Yarco]

Yes, it can be done like this.
But cause $MONTH_NAMES is variable, someone could change the value.

// Data.cls.php
class Date {
public static $MONTH_NAMES = array('January', ...);
}

// Plugin.php
Date::$MONTH_NAMES = null; // someone don't know the meaning of the
variable

// Template.php
print Date::$MONTH_NAMES[1]; // then your code doesn't work

On Aug 2, 11:01 am, Hendri Kurniawan <[e-mail]:

On Aug 2, 12:55 pm, Yarco <[e-mail]:

Array is the very basic type in php i think. So why const keyword
doesn't support such defination grammar?

class Date
{
const char3 = array(1 ='Jan', ...); // ??

}

So how can i do somthing like c++'s enum?

class Data
{
const Jan = 1;
//...

}

is poor if i want to chanslate number to month name.

Well if you can't have const array, do a public static property
instead
class Data {
public static $MONTH_NAMES = array('January', ...);

}

Hendri Kurniawan

[Jerry Stuckle]

Yarco wrote:

Yes, it can be done like this.
But cause $MONTH_NAMES is variable, someone could change the value.

// Data.cls.php
class Date {
public static $MONTH_NAMES = array('January', ...);
}

// Plugin.php
Date::$MONTH_NAMES = null; // someone don't know the meaning of the
variable

// Template.php
print Date::$MONTH_NAMES[1]; // then your code doesn't work

On Aug 2, 11:01 am, Hendri Kurniawan <[e-mail]:

>On Aug 2, 12:55 pm, Yarco <[e-mail]:

>>Array is the very basic type in php i think. So why const keyword
doesn't support such defination grammar?
class Date
{
const char3 = array(1 ='Jan', ...); // ??
}
So how can i do somthing like c++'s enum?
class Data
{
const Jan = 1;
//...
}
is poor if i want to chanslate number to month name.

Well if you can't have const array, do a public static property
instead
class Data {
public static $MONTH_NAMES = array('January', ...);

}

Hendri Kurniawan

Make it private and don't change it in the class (requires PHP 5.x,
which people should be on now - or at least soon).
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attglobal.net
==================

[Yarco]

Yes, they could work if we do our effort.
We could add final keyword to forbidden someone to change this
class...

final class Date
{
private static $month_names = array(...);

public static getMonthName($i)
{
return $month_names[$i];
}
}

But const array would keep it simple.
On Aug 2, 11:49 am, Jerry Stuckle <[e-mail]:

Yarco wrote:

Yes, it can be done like this.
But cause $MONTH_NAMES is variable, someone could change the value.

// Data.cls.php
class Date {
public static $MONTH_NAMES = array('January', ...);
}

// Plugin.php
Date::$MONTH_NAMES = null; // someone don't know the meaning of the
variable

// Template.php
print Date::$MONTH_NAMES[1]; // then your code doesn't work

On Aug 2, 11:01 am, Hendri Kurniawan <[e-mail]:

On Aug 2, 12:55 pm, Yarco <[e-mail]:

>Array is the very basic type in php i think. So why const keyword
doesn't support such defination grammar?
class Date
{
const char3 = array(1 ='Jan', ...); // ??
}
So how can i do somthing like c++'s enum?
class Data
{
const Jan = 1;
//...
}
is poor if i want to chanslate number to month name.
Well if you can't have const array, do a public static property
instead
class Data {
public static $MONTH_NAMES = array('January', ...);

}

Hendri Kurniawan

Make it private and don't change it in the class (requires PHP 5.x,
which people should be on now - or at least soon).

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
[e-mail]
==================

[Alexey Kulentsov]

Yarco wrote:

So how can i do somthing like c++'s enum?

Only for global scope.

----------------enum.inc.php--------------------------------->8-------------------

<?php
/**
* Copyright (c) 2006 by Alexey Kulentsov
*
* usage example:
* enum(1,'one','two','three',5,'five','six');
*
* History:
* 2006-02-23 started
* 2007-05-31 optimized
*/

function enum()
{
$counter=0;
$retval=array();

foreach(func_get_args() as $arg)
if(gettype($arg)=='integer')
$counter=$arg;
else
define($retval[$counter++]=$arg,$counter);

return $retval;
}

?>
------------------------------------------------------------->8-------------------

[gosha bine]

On 02.08.2007 04:55 Yarco wrote:

Array is the very basic type in php i think. So why const keyword
doesn't support such defination grammar?

class Date
{
const char3 = array(1 ='Jan', ...); // ??
}

So how can i do somthing like c++'s enum?

class Data
{
const Jan = 1;
//...
}

is poor if i want to chanslate number to month name.

The reason of disabling arrays was that parser wasn't able to parse
"someConst[key]" correctly.

http://bugs.php.net/bug.php?id=25816

As to enums, they are used in C to give symbolic names to integer
constants. In php constants don't have to be integer, that is we can
simply use strings instead of symbolic names:

// c way

const BY_NAME = 1;
....
if($sort_mode == BY_NAME) ...
// php way

if($sort_mode == 'BY_NAME') ...
ruby's interned strings (:BY_NAME) would be even better, unfortunately
php doesn't support this

--
gosha bine

makrell ~ http://www.tagarga.com/blok/makrell
php done right ;) http://code.google.com/p/pihipi

[Toby A Inkster]

Yarco wrote:

But cause $MONTH_NAMES is variable, someone could change the value.

If you overload the class' __set() function you can effectively make it
read-only. (Assuming you're using PHP 5.)

Better though:

function get_month_name ($n, $fmt='M')
{
$d = mktime(12, 0, 0, $n, 1, 1970);
return date($fmt, $d);
}

--
Toby A Inkster BSc (Hons) ARCS
[Geek of HTML/SQL/Perl/PHP/Python/Apache/Linux]
[OS: Linux 2.6.12-12mdksmp, up 42 days, 12:20.]

PHP Encryption Class
http://tobyinkster.co.uk/blog/2007/0...ryption-class/

[Yarco]

Well...Yes....but nothing is better than use const array.

I've already done such things:
$buf = range(0, 12); unset($buf[0]);
array_walk($buf, create_function('&$v, $k', '$v = date("M",
strtotime("2007-$k-01"));'));
print_r($buf);

.......what a pity php doesn't support const array...

On Aug 2, 4:44 pm, Toby A Inkster <[e-mail]>
wrote:

Yarco wrote:

But cause $MONTH_NAMES is variable, someone could change the value.

If you overload the class' __set() function you can effectively make it
read-only. (Assuming you're using PHP 5.)

Better though:

function get_month_name ($n, $fmt='M')
{
$d = mktime(12, 0, 0, $n, 1, 1970);
return date($fmt, $d);
}

--
Toby A Inkster BSc (Hons) ARCS
[Geek of HTML/SQL/Perl/PHP/Python/Apache/Linux]
[OS: Linux 2.6.12-12mdksmp, up 42 days, 12:20.]

PHP Encryption Class
http://tobyinkster.co.uk/blog/2007/0...ryption-class/