[PHP] A stupid question about classes
Hello everyone,
Just a basic question.
I have my class starting like this:
Class OireMail {
// these are required
public $smtp_server=;
public $domain=;
public $from=;
public $login=;
public $pass=;
And then go the function themselves.
I was told that it's better to put the initial variables in the
__construct() function. What are the advantages of doing that and if I
need to do it, how would I call the class from another file then?
Thanks!
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Re: [PHP] A stupid question about classes
On 05/01/2010 10:23 PM, Andre Polykanine wrote:
Hello everyone,
Just a basic question.
I have my class starting like this:
Class OireMail {
// these are required
public $smtp_server=;
public $domain=;
public $from=;
public $login=;
public $pass=;
And then go the function themselves.
I was told that it's better to put the initial variables in the
__construct() function. What are the advantages of doing that and if I
need to do it, how would I call the class from another file then?
Thanks!
The advantages of initializing the variables in __construct() is that
whenever an object of the class is created, the variables have the
values you expect.
If you don't put them in __construct(), you will have to create another
method which will have to be called after you have created the object
using the new operator.
Ultimately its the same thing, __construct() is called automatically,
only that's the difference.
--
Nilesh Govindarajan
Site Server Administrator
www.itech7.com
मेरा भारत महान !
मम भारत: महत्तम भवतु !
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Re[2]: [PHP] A stupid question about classes
Hello Nilesh,
So could you illustrate a bit the __construct() function, please?
Should I pass those variables as parameters of that function? And what
if I need to change their values?)
Thanks!
--
With best regards from Ukraine,
Andre
Skype: Francophile; WlmMSN: arthaelon @ yandex.ru; Jabber: arthaelon @
jabber.org
Yahoo! messenger: andre.polykanine; ICQ: 191749952
Twitter: m_elensule
- Original message -
From: Nilesh Govindarajan li...@itech7.com
To: php-general@lists.php.net php-general@lists.php.net
Date: Saturday, May 1, 2010, 8:16:37 PM
Subject: [PHP] A stupid question about classes
On 05/01/2010 10:23 PM, Andre Polykanine wrote:
Hello everyone,
Just a basic question.
I have my class starting like this:
Class OireMail {
// these are required
public $smtp_server=;
public $domain=;
public $from=;
public $login=;
public $pass=;
And then go the function themselves.
I was told that it's better to put the initial variables in the
__construct() function. What are the advantages of doing that and if I
need to do it, how would I call the class from another file then?
Thanks!
The advantages of initializing the variables in __construct() is that
whenever an object of the class is created, the variables have the
values you expect.
If you don't put them in __construct(), you will have to create another
method which will have to be called after you have created the object
using the new operator.
Ultimately its the same thing, __construct() is called automatically,
only that's the difference.
--
Nilesh Govindarajan
Site Server Administrator
www.itech7.com
!
?? : ?? !
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Re: Re[2]: [PHP] A stupid question about classes
On 1 May 2010 20:38, Andre Polykanine an...@oire.org wrote:
Hello Nilesh,
So could you illustrate a bit the __construct() function, please?
Should I pass those variables as parameters of that function? And what
if I need to change their values?)
Thanks!
?php
// The generic class which can act standalone.
Class OireMail {
// these are required
public $smtp_server=;
public $domain=;
public $from=;
public $login=;
public $pass=;
public function __construct($smtp_server = '', $domain = '', $from =
'', $login = '', $pass = '') {
$this-stmp_server = $smtp_server;
$this-domain = $domain;
$this-from = $from;
$this-login = $login;
$this-pass = $pass;
}
}
// Let's create a generic email class and supply all the params.
$Mail = new OireMail('Server', 'Domain', 'f...@domain.com', 'login',
'Passw0rd');
// A more specialised version of the class with all the required params pre set.
Class SpecialisedOireMail extends OireMail {
public function __construct() {
parent::__construct('SpecServer', 'SpecDomain',
's...@specdomain.com', 'SpecLogin', 'SpecPassw0rd');
}
}
// Let's create a specialised version. Note - no need to supply params
as the sub-class deals with that.
$SpecMail = new SpecialisedOireMail();
var_dump($Mail, $SpecMail);
?
outputs ...
object(OireMail)#1 (6) {
[smtp_server]=
string(0)
[domain]=
string(6) Domain
[from]=
string(15) f...@domain.com
[login]=
string(5) login
[pass]=
string(8) Passw0rd
[stmp_server]=
string(6) Server
}
object(SpecialisedOireMail)#2 (6) {
[smtp_server]=
string(0)
[domain]=
string(10) SpecDomain
[from]=
string(19) s...@specdomain.com
[login]=
string(9) SpecLogin
[pass]=
string(12) SpecPassw0rd
[stmp_server]=
string(10) SpecServer
}
Hope that helps.
--
-
Richard Quadling
Standing on the shoulders of some very clever giants!
EE : http://www.experts-exchange.com/M_248814.html
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Re[4]: [PHP] A stupid question about classes
Hello Richard,
thanks a lot!
--
With best regards from Ukraine,
Andre
Skype: Francophile; WlmMSN: arthaelon @ yandex.ru; Jabber: arthaelon @
jabber.org
Yahoo! messenger: andre.polykanine; ICQ: 191749952
Twitter: m_elensule
- Original message -
From: Richard Quadling rquadl...@googlemail.com
To: Andre Polykanine an...@oire.org
Date: Saturday, May 1, 2010, 10:49:49 PM
Subject: [PHP] A stupid question about classes
On 1 May 2010 20:38, Andre Polykanine an...@oire.org wrote:
Hello Nilesh,
So could you illustrate a bit the __construct() function, please?
Should I pass those variables as parameters of that function? And what
if I need to change their values?)
Thanks!
?php
// The generic class which can act standalone.
Class OireMail {
// these are required
public $smtp_server=;
public $domain=;
public $from=;
public $login=;
public $pass=;
public function __construct($smtp_server = '', $domain = '', $from =
'', $login = '', $pass = '') {
$this-stmp_server = $smtp_server;
$this-domain = $domain;
$this-from = $from;
$this-login = $login;
$this-pass = $pass;
}
}
// Let's create a generic email class and supply all the params.
$Mail = new OireMail('Server', 'Domain', 'f...@domain.com', 'login',
'Passw0rd');
// A more specialised version of the class with all the required params pre set.
Class SpecialisedOireMail extends OireMail {
public function __construct() {
parent::__construct('SpecServer', 'SpecDomain',
's...@specdomain.com', 'SpecLogin', 'SpecPassw0rd');
}
}
// Let's create a specialised version. Note - no need to supply params
as the sub-class deals with that.
$SpecMail = new SpecialisedOireMail();
var_dump($Mail, $SpecMail);
?
outputs ...
object(OireMail)#1 (6) {
[smtp_server]=
string(0)
[domain]=
string(6) Domain
[from]=
string(15) f...@domain.com
[login]=
string(5) login
[pass]=
string(8) Passw0rd
[stmp_server]=
string(6) Server
}
object(SpecialisedOireMail)#2 (6) {
[smtp_server]=
string(0)
[domain]=
string(10) SpecDomain
[from]=
string(19) s...@specdomain.com
[login]=
string(9) SpecLogin
[pass]=
string(12) SpecPassw0rd
[stmp_server]=
string(10) SpecServer
}
Hope that helps.
--
-
Richard Quadling
Standing on the shoulders of some very clever giants!
EE : http://www.experts-exchange.com/M_248814.html
EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp
Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498r=213474731
ZOPA : http://uk.zopa.com/member/RQuadling
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