Re: [PHP] Re: _Construct question
On Mar 21, 2007, at 7:14 PM, Chris wrote:
Erik Jones wrote:
That's not true, running with v. 5.2.1:
?php
class A
{
function A() {
echo works\n;
}
}
$a = new A();
?
Outputs:
works
On Mar 21, 2007, at 8:06 AM, itoctopus wrote:
They're basically the same thing, however, you can only use
__construct in
PHP5.
He meant that __construct() doesn't work in php4.
It's only available in php5.
php5 does this:
Is the function __construct available?
- Yes? Use it.
- No? Look for a function with the same name as the class. If
that's available, use it.
So it's backwards compatible.
Ah, yes, looking back I can see how his statement was ambiguous.
erik jones [EMAIL PROTECTED]
software developer
615-296-0838
emma(r)
[PHP] Re: _Construct question
They're basically the same thing, however, you can only use __construct in
PHP5.
--
itoctopus - http://www.itoctopus.com
John Comerford [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Hi Folks,
I am still pretty new to PHP and I have a question regarding classes and
using _construct. Up until now I have been creating my classes as
follows:
class test1 {
var $name;
function test1($pName) {
$this-name = $pName;
}
}
So I when I create a new class I can assign 'name' by doing '$t1 = new
test1(test1);'
As part of another thread I noticed the _construct function which (if I
am correct) does more or less the same thing:
class test2 {
var $name;
function _construct($pName) {
$this-name = $pName;
}
}
I have fished around a bit and cannot find why one might be better than
the other. The only thing I can think is that maybe you need to use
_construct to be able to use extends ?
Is this the case ? What is the advantage/disadvantage of using
_construct as opposed to using a function with the classname ?
Thanks,
JC
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Re: [PHP] Re: _Construct question
That's not true, running with v. 5.2.1:
?php
class A
{
function A() {
echo works\n;
}
}
$a = new A();
?
Outputs:
works
On Mar 21, 2007, at 8:06 AM, itoctopus wrote:
They're basically the same thing, however, you can only use
__construct in
PHP5.
--
itoctopus - http://www.itoctopus.com
John Comerford [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Hi Folks,
I am still pretty new to PHP and I have a question regarding
classes and
using _construct. Up until now I have been creating my classes as
follows:
class test1 {
var $name;
function test1($pName) {
$this-name = $pName;
}
}
So I when I create a new class I can assign 'name' by doing '$t1 =
new
test1(test1);'
As part of another thread I noticed the _construct function which
(if I
am correct) does more or less the same thing:
class test2 {
var $name;
function _construct($pName) {
$this-name = $pName;
}
}
I have fished around a bit and cannot find why one might be better
than
the other. The only thing I can think is that maybe you need to use
_construct to be able to use extends ?
Is this the case ? What is the advantage/disadvantage of using
_construct as opposed to using a function with the classname ?
Thanks,
JC
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
erik jones [EMAIL PROTECTED]
software developer
615-296-0838
emma(r)
Re: [PHP] Re: _Construct question
Erik Jones wrote:
That's not true, running with v. 5.2.1:
?php
class A
{
function A() {
echo works\n;
}
}
$a = new A();
?
Outputs:
works
On Mar 21, 2007, at 8:06 AM, itoctopus wrote:
They're basically the same thing, however, you can only use
__construct in
PHP5.
He meant that __construct() doesn't work in php4.
It's only available in php5.
php5 does this:
Is the function __construct available?
- Yes? Use it.
- No? Look for a function with the same name as the class. If that's
available, use it.
So it's backwards compatible.
--
Postgresql php tutorials
http://www.designmagick.com/
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[PHP] Re: _Construct question
John Comerford wrote:
Hi Folks,
I am still pretty new to PHP and I have a question regarding classes and
using _construct. Up until now I have been creating my classes as follows:
class test1 {
var $name;
function test1($pName) {
$this-name = $pName;
}
}
So I when I create a new class I can assign 'name' by doing '$t1 = new
test1(test1);'
As part of another thread I noticed the _construct function which (if I
am correct) does more or less the same thing:
class test2 {
var $name;
function _construct($pName) {
$this-name = $pName;
}
}
I have fished around a bit and cannot find why one might be better than
the other. The only thing I can think is that maybe you need to use
_construct to be able to use extends ?
Is this the case ? What is the advantage/disadvantage of using
_construct as opposed to using a function with the classname ?
Hi John,
The main advantage comes when you are extending a class.
PHP 4:
?php
class ReallyLongNameWithTypoPotential {
function ReallyLongNameWithTypoPotential(){}
}
class childclass {
function childclass()
{
parent::ReallyLongNameWithTypoPotential();
}
}
?
PHP 5:
?php
class ReallyLongNameWithTypoPotential {
function __construct(){}
}
class childclass {
function __construct()
{
parent::__construct();
}
}
?
Aside from the benefit of not needing to remember the parent class name
or type it in just to call the parent class constructor, another benefit
is that a quick scan of the source code will allow you to find the
constructor much more readily. You don't even need to know the classname.
There are lots and lots of changes to the object model in PHP 5, see:
http://www.php.net/manual/en/language.oop.php
http://www.php.net/manual/en/language.oop5.php
Greg
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