Re: [PHP] OOP problems
On 12/15/2011 01:05 PM, Alex Pojarsky wrote:
I'm not sure I've understood you correctly, but you may try something
like the following primitive autoloader (I didn't debug it, it's just
an example):
class Base
{
protected $_path = '';
public function construct($base_path)
{
$this->_path = $base_path;
}
public function __get($name)
{
$requested_path = $this->_path . DIRECTORY_SEPARATOR . $name;
if (is_dir($requested_path))
{
return new Base($requested_path);
}
else if (is_file($requested_path . '.php'))
{
include ($requested_path . '.php');
$classname = ucfirst($name);
return new $clasname();
}
}
}
// Assuming you have Mysql class in /home/user/project/classes/db/mysql.php
// you may try
$base = new Base("/home/user/project/classes/");
$base->db->mysql->someFunctionOfMysqlClass();
2011/12/15 Dominik Halvoník:
Hello,
I would like to ask you for help. This days I am trying to build one of my
applications. But I have problem which stopped me. I have folder whit php
files like connect.php, delete.php etc. These files contains classes named
the same as files. So in file connect.php is class Connect. These files are
placed in folder named mysql and this folder is inside folder named db. In
folder db is a php file named mysql.php, in this file I include classes
from folder mysql, after include I declare class MySQL and in it I have
method __construct(). In this method I create dynamic objects from included
classes. And this is the problem that I can not solve, I have more then one
of this files(mysql.php[whit class MySQL], oracle.php[whit class Oracle]
etc.) and I need to include them to file called db.php that is in the main
folder of my app. In db.php is an class called db, how can I add classes
MySQL, Oracle etc. to class db? I try to use abstract class whit __set and
__get methods but I also need to include class db to main class
application. I am really sorry for my English, so please be indulgent. So I
need to connect classes like this:
application->db->mysql->connect, but I can not use extends because in php
you can have only one parent class. The reason why I am trying to do
something like this is because I want to call methods like this:
$test = new application();
$test->db->connect();
If it is mysql or othet database I set in config.php file.
I need to achieve this schema( -> is something like ../ it means that it is
one level up folder):
connec.php(class Connect MySql)->
select.php(class Select MySql) ->
-> mysql.php(class MySQL include all classes, Connect...)->
->
... ->
-> db.php(class db include all classes, MySQL, Oracle..)
connec.php(class Connect Oracle)->
select.php(class Select Oracle ) ->
-> oracle .php(class Oracle include all classes, Connect...)->
->
... ->
download.php(class Download)->
unzip.php(class Unzip) ->
-> files.php(class Files include all classes, Download...) ->
file.php(class file include class Files)
->
... ->
hash.php(class Hash)->
capcha.php(class Capcha) ->
-> secure.php(class Secure include all classes, Hash...) ->
security.php(class security include class Secure)
->
... ->
ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect.
And in the end, in the same folder as db.php and security.php I will have
file application.php which will contain class application and in its
__construct() method I will make link classes db, security, file ect. ect.
So I will just include file application.php make object from class
application and then just do $object->db->connect()(of course if it will by
MySql or other database will be stored in some config.php file).
Thanks,
Dominik
Why don't you modify include_path on initialization of 'Base' class?
would make things much simpler.
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Re: [PHP] OOP problems
I'm not sure I've understood you correctly, but you may try something
like the following primitive autoloader (I didn't debug it, it's just
an example):
class Base
{
protected $_path = '';
public function construct($base_path)
{
$this->_path = $base_path;
}
public function __get($name)
{
$requested_path = $this->_path . DIRECTORY_SEPARATOR . $name;
if (is_dir($requested_path))
{
return new Base($requested_path);
}
else if (is_file($requested_path . '.php'))
{
include ($requested_path . '.php');
$classname = ucfirst($name);
return new $clasname();
}
}
}
// Assuming you have Mysql class in /home/user/project/classes/db/mysql.php
// you may try
$base = new Base("/home/user/project/classes/");
$base->db->mysql->someFunctionOfMysqlClass();
2011/12/15 Dominik Halvoník :
> Hello,
>
> I would like to ask you for help. This days I am trying to build one of my
> applications. But I have problem which stopped me. I have folder whit php
> files like connect.php, delete.php etc. These files contains classes named
> the same as files. So in file connect.php is class Connect. These files are
> placed in folder named mysql and this folder is inside folder named db. In
> folder db is a php file named mysql.php, in this file I include classes
> from folder mysql, after include I declare class MySQL and in it I have
> method __construct(). In this method I create dynamic objects from included
> classes. And this is the problem that I can not solve, I have more then one
> of this files(mysql.php[whit class MySQL], oracle.php[whit class Oracle]
> etc.) and I need to include them to file called db.php that is in the main
> folder of my app. In db.php is an class called db, how can I add classes
> MySQL, Oracle etc. to class db? I try to use abstract class whit __set and
> __get methods but I also need to include class db to main class
> application. I am really sorry for my English, so please be indulgent. So I
> need to connect classes like this:
>
> application->db->mysql->connect, but I can not use extends because in php
> you can have only one parent class. The reason why I am trying to do
> something like this is because I want to call methods like this:
> $test = new application();
> $test->db->connect();
>
> If it is mysql or othet database I set in config.php file.
>
> I need to achieve this schema( -> is something like ../ it means that it is
> one level up folder):
>
> connec.php(class Connect MySql)->
> select.php(class Select MySql) ->
> -> mysql.php(class MySQL include all classes, Connect...)->
> ->
> ... ->
> -> db.php(class db include all classes, MySQL, Oracle..)
> connec.php(class Connect Oracle)->
> select.php(class Select Oracle ) ->
> -> oracle .php(class Oracle include all classes, Connect...)->
> ->
> ... ->
>
> download.php(class Download)->
> unzip.php(class Unzip) ->
> -> files.php(class Files include all classes, Download...) ->
> file.php(class file include class Files)
> ->
> ... ->
>
> hash.php(class Hash)->
> capcha.php(class Capcha) ->
> -> secure.php(class Secure include all classes, Hash...) ->
> security.php(class security include class Secure)
> ->
> ... ->
> ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect.
>
> And in the end, in the same folder as db.php and security.php I will have
> file application.php which will contain class application and in its
> __construct() method I will make link classes db, security, file ect. ect.
> So I will just include file application.php make object from class
> application and then just do $object->db->connect()(of course if it will by
> MySql or other database will be stored in some config.php file).
>
> Thanks,
>
> Dominik
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[PHP] OOP problems
Hello, I would like to ask you for help. This days I am trying to build one of my applications. But I have problem which stopped me. I have folder whit php files like connect.php, delete.php etc. These files contains classes named the same as files. So in file connect.php is class Connect. These files are placed in folder named mysql and this folder is inside folder named db. In folder db is a php file named mysql.php, in this file I include classes from folder mysql, after include I declare class MySQL and in it I have method __construct(). In this method I create dynamic objects from included classes. And this is the problem that I can not solve, I have more then one of this files(mysql.php[whit class MySQL], oracle.php[whit class Oracle] etc.) and I need to include them to file called db.php that is in the main folder of my app. In db.php is an class called db, how can I add classes MySQL, Oracle etc. to class db? I try to use abstract class whit __set and __get methods but I also need to include class db to main class application. I am really sorry for my English, so please be indulgent. So I need to connect classes like this: application->db->mysql->connect, but I can not use extends because in php you can have only one parent class. The reason why I am trying to do something like this is because I want to call methods like this: $test = new application(); $test->db->connect(); If it is mysql or othet database I set in config.php file. I need to achieve this schema( -> is something like ../ it means that it is one level up folder): connec.php(class Connect MySql)-> select.php(class Select MySql) -> -> mysql.php(class MySQL include all classes, Connect...)-> -> ... -> -> db.php(class db include all classes, MySQL, Oracle..) connec.php(class Connect Oracle)-> select.php(class Select Oracle ) -> -> oracle .php(class Oracle include all classes, Connect...)-> -> ... -> download.php(class Download)-> unzip.php(class Unzip) -> -> files.php(class Files include all classes, Download...) -> file.php(class file include class Files) -> ... -> hash.php(class Hash)-> capcha.php(class Capcha) -> -> secure.php(class Secure include all classes, Hash...) -> security.php(class security include class Secure) -> ... -> ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. And in the end, in the same folder as db.php and security.php I will have file application.php which will contain class application and in its __construct() method I will make link classes db, security, file ect. ect. So I will just include file application.php make object from class application and then just do $object->db->connect()(of course if it will by MySql or other database will be stored in some config.php file). Thanks, Dominik
Re: [PHP] OOP problems
Hi guys, I try to applied your solutions but I have problems whit it. I need to achieve this schema( -> is something like ../ it means that it is one level up folder): connec.php(class Connect MySql)-> select.php(class Select MySql) -> -> mysql.php(class MySQL include all classes, Connect...)-> -> ... -> -> db.php(class db include all classes, MySQL, Oracle..) connec.php(class Connect Oracle)-> select.php(class Select Oracle ) -> -> oracle .php(class Oracle include all classes, Connect...)-> -> ... -> download.php(class Download)-> unzip.php(class Unzip) -> -> files.php(class Files include all classes, Download...) -> file.php(class file include class Files) -> ... -> hash.php(class Hash)-> capcha.php(class Capcha) -> -> secure.php(class Secure include all classes, Hash...) -> security.php(class security include class Secure) -> ... -> *ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. ect. * And in the end, in the same folder as db.php and security.php I will have file application.php which will contain class application and in its __construct() method I will make link classes db, security, file ect. ect. So I will just include file application.php make object from class application and then just do $object->db->connect()(of course if it will by MySql or other database will be stored in some config.php file). Thanks, Dominik
Re: [PHP] OOP problems
Sent from a handheld device On 08-Dec-2011, at 11:14 PM, "Dominik Halvoník" wrote: > Hello, > > I would like to ask you for help. This days I am trying to build one of my > applications. But I have problem which stopped me. I have folder whit php > files like connect.php, delete.php etc. These files contains classes named > the same as files. So in file connect.php is class Connect. These files are > placed in folder named mysql and this folder is inside folder named db. In > folder db is a php file named mysql.php, in this file I include classes > from folder mysql, after include I declare class MySQL and in it I have > method __construct(). In this method I create dynamic objects from included > classes. And this is the problem that I can not solve, I have more then one > of this files(mysql.php[whit class MySQL], oracle.php[whit class Oracle] > etc.) and I need to include them to file called db.php that is in the main > folder of my app. In db.php is an class called db, how can I add classes > MySQL, Oracle etc. to class db? I try to use abstract class whit __set and > __get methods but I also need to include class db to main class > application. I am really sorry for my English, so please be indulgent. So I > need to connect classes like this: > This is where common design patters comes handy. Your problem can be solved by factory pattern. Create a static method connect on db class. Then call it like $db = DB::connect($db_type) Here the db type variable contains MySQL or oracle. In connect static method you implement the logic on how to connect that specific database. In the connect method you can also take db credentials like username and password. Google "php design pattern" to know more. > application->db->mysql->connect, but I can not use extends because in php > you can have only one parent class. The reason why I am trying to do > something like this is because I want to call methods like this: > $test = new application(); > $test->db->connect(); > > If it is mysql or othet database I set in config.php file. Can you help my > please? > > Sincerely, > > Dominik Halvonik -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] OOP problems
On 8 Dec 2011, at 17:14, Dominik Halvoník wrote:
> I would like to ask you for help. This days I am trying to build one of my
> applications. But I have problem which stopped me. I have folder whit php
> files like connect.php, delete.php etc. These files contains classes named
> the same as files. So in file connect.php is class Connect. These files are
> placed in folder named mysql and this folder is inside folder named db. In
> folder db is a php file named mysql.php, in this file I include classes
> from folder mysql, after include I declare class MySQL and in it I have
> method __construct(). In this method I create dynamic objects from included
> classes. And this is the problem that I can not solve, I have more then one
> of this files(mysql.php[whit class MySQL], oracle.php[whit class Oracle]
> etc.) and I need to include them to file called db.php that is in the main
> folder of my app. In db.php is an class called db, how can I add classes
> MySQL, Oracle etc. to class db? I try to use abstract class whit __set and
> __get methods but I also need to include class db to main class
> application. I am really sorry for my English, so please be indulgent. So I
> need to connect classes like this:
>
> application->db->mysql->connect, but I can not use extends because in php
> you can have only one parent class. The reason why I am trying to do
> something like this is because I want to call methods like this:
> $test = new application();
> $test->db->connect();
>
> If it is mysql or othet database I set in config.php file. Can you help my
> please?
You don't say what the db class (in db.php) itself does other than wrapping the
database-specific classes, so I've assumed it doesn't do anything. If it does
do more then simply have the mysql, oracle, etc classes extend db.
I've also assumed that the application doesn't need to support multiple
database types simultaneously.
class application
{
public $db = null;
function __construct($db = 'mysql')
{
require __DIR__.'/db/'.$db.'.php';
$this->db = new MySQL();
}
}
$test = new application('mysql');
$test->db->connect();
-Stuart
--
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3ft9 Ltd
http://3ft9.com/
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[PHP] OOP problems
Hello, I would like to ask you for help. This days I am trying to build one of my applications. But I have problem which stopped me. I have folder whit php files like connect.php, delete.php etc. These files contains classes named the same as files. So in file connect.php is class Connect. These files are placed in folder named mysql and this folder is inside folder named db. In folder db is a php file named mysql.php, in this file I include classes from folder mysql, after include I declare class MySQL and in it I have method __construct(). In this method I create dynamic objects from included classes. And this is the problem that I can not solve, I have more then one of this files(mysql.php[whit class MySQL], oracle.php[whit class Oracle] etc.) and I need to include them to file called db.php that is in the main folder of my app. In db.php is an class called db, how can I add classes MySQL, Oracle etc. to class db? I try to use abstract class whit __set and __get methods but I also need to include class db to main class application. I am really sorry for my English, so please be indulgent. So I need to connect classes like this: application->db->mysql->connect, but I can not use extends because in php you can have only one parent class. The reason why I am trying to do something like this is because I want to call methods like this: $test = new application(); $test->db->connect(); If it is mysql or othet database I set in config.php file. Can you help my please? Sincerely, Dominik Halvonik
Re: [PHP] oop problems code
ORLANDO POZO wrote: Hello, mailing list, I have problem with this oop code: [snip bad code] -- the output of it is: [snip output] -- I don't know what happen in this code, because, the last inheritance (Displayer Class) that I made, it is inherited the properties and methods of the Employee Class, and as Employee Class is also inherited the functionality of the parent class, the Displayer Class would be inherit this functionality, too. thanks if any could help me, regards, bye. If a class doesn't define a constructor, the constructor of its parent is used; the inherited constructor of displayer wants 6 parameters. Also, your code wouldn't do anything useful, since you don't set the values of $obj2 (did you expect it to get values from $obj1?). -- The above message is encrypted with double rot13 encoding. Any unauthorized attempt to decrypt it will be prosecuted to the full extent of the law. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] oop problems code
Hello, mailing list, I have problem with this oop code:
class Person {
var $name, $address, $age;
function Person($name, $address, $age) {
$this->name = $name;
$this->address = $address;
$this->age = $age;
}
}
Class Employee extends Person {
var $position, $salary;
function Employee($name, $address, $age, $position,
$salary) {
$this->Person($name, $address, $age);
$this->position = $position;
$this->salary = $salary;
}
}
Class Displayer extends Employee {
function DisplayEmployee() {
echo "Name: " . $this->name . "";
echo "Address: " . $this->address . "";
echo "Age: " . $this->age . "";
echo "Position: " . $this->position . "";
echo "Salary: " . $this->salary . "";
}
}
$obj1 = new Employee("Orlando J Pozo P","Calle 75 AV
9B-10","20","Computer Engineer","$2000");
$obj2 = new Displayer;
$obj2->DisplayEmployee();
?>
--
the output of it is:
Warning: Missing argument 1 for employee() in
C:\htdocs\ojpp\poo\3\practica\Copy of 18.php on line 16
Warning: Missing argument 2 for employee() in
C:\htdocs\ojpp\poo\3\practica\Copy of 18.php on line 16
Warning: Missing argument 3 for employee() in
C:\htdocs\ojpp\poo\3\practica\Copy of 18.php on line 16
Warning: Missing argument 4 for employee() in
C:\htdocs\ojpp\poo\3\practica\Copy of 18.php on line 16
Warning: Missing argument 5 for employee() in
C:\htdocs\ojpp\poo\3\practica\Copy of 18.php on line 16
Name:
Address:
Age:
Position:
Salary:
--
I don't know what happen in this code, because, the
last inheritance (Displayer Class) that I made, it is
inherited the properties and methods of the Employee
Class, and as Employee Class is also inherited the
functionality of the parent class, the Displayer Class
would be inherit this functionality, too.
thanks if any could help me, regards, bye.
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Re: [PHP] OOP Problems
Hi Andrew!
On Sat, 14 Jul 2001, Andrew Kirilenko wrote:
> Hello!
>
> I have following problem:
>
> $container = new ccontainer();
> $container->init();
> $container->test1->foo();
> $container->test2->foo();
> $container->test2->owner->test1->foo();
[*]
> $container->test1->owner->test2->foo();
>
> class ccontainer
> {
> function ccontainer()
> {
> }
>
> function init()
> {
> $this->test1 = new ctest(&$this);
> $this->test2 = new ctest(&$this);
> }
> }
>
> class ctest
> {
> function ctest(&$owner)
> {
> $this->owner = $owner;
> }
>
> function foo()
> {
> echo "test!";
> }
> }
> ?>
>
> Output of this script is:
> --->
> test!
> test!
> test!
> Fatal error: Call to a member function on a non-object in c:\www\a.php on
> line 8
> <---
>
> How to solve this problem???
>
at the moment marked [*] you are using test1->owner
test1->owner is ccontainer *before* init() had the chance to set test2 to it,
so the class has no such property "test2".
try a print_r($container) right after $cointainer->init() to see what I mean.
actually, you will notice that test2->owner doesn't have test2 member too!
cause at the moment it was created, the ccontainer was incomplete
(the expression $this->test2 = new ctest (&$this) evaluates right-to-left)
a quick hack would be to have a circular reference, by saying:
$this->owner =& $owner; // note the & :)
but the way you create the classes seems just trouble. what exactly are you
trying to achive?
-- teodor
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[PHP] OOP Problems
Hello!
I have following problem:
init();
$container->test1->foo();
$container->test2->foo();
$container->test2->owner->test1->foo();
$container->test1->owner->test2->foo();
class ccontainer
{
function ccontainer()
{
}
function init()
{
$this->test1 = new ctest(&$this);
$this->test2 = new ctest(&$this);
}
}
class ctest
{
function ctest(&$owner)
{
$this->owner = $owner;
}
function foo()
{
echo "test!";
}
}
?>
Output of this script is:
--->
test!
test!
test!
Fatal error: Call to a member function on a non-object in c:\www\a.php on
line 8
<---
How to solve this problem???
Best regards,
Andrew Kirilenko,
Senior Programmer / System Administrator,
Internet Service.
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