Is a global PHP CONSTANT available inside of a Class file?
define('SITE_PATH', 'C:/webserver/htdocs/somefolder/');
Then in my class file I try this
public $debug_file = SITE_PATH. 'debug/debug.sql';
This does not seem to work though,
Parse error: parse error, expecting
','' or';'' in
C:\webserver\htdocs\somefolder\includes\classes\Database.class.php
on line 21
I second what the others said. Since $debugFile seems an optional dependency, I'd suggest to initialize a sane default on creation of the class and then allow changing it by setter injection when needed, e.g.
define('SITE_PATH', 'C:/webserver/htdocs/somefolder/');
class Klass
{
protected $_debugFile;
public function __construct()
{
$this->_debugFile = SITE_PATH. 'debug/debug.sql' // default
}
public function setDebugFile($path)
{
$this->_debugFile = $path // custom
}
}
Note that injecting SITE_PATH, instead of hardcoding it, would be even better practice.
You cannot have an expression in a class declaration.
I would suggest passing the path in:
public function __construct($path)
{
$this->debug_path = $path;
}
This gives you more flexibility if you ever want to change the path, you don't have to change a constant, just what you pass in.
Or you could create multiple objects that all have different paths. This is useful if it is an autoloader class, as you might want to have it load multiple directories.
$autoloader = new Autoload(dirname(SYS_PATH));
$autoloader->register_loader();
class Autoload
{
public $include_path = "";
public function __construct($include_path="")
{
// Set the Include Path
// TODO: Sanitize Include Path (Remove Trailing Slash)
if(!empty($include_path))
{
$this->include_path = $include_path;
}
else
{
$this->include_path = get_include_path();
}
// Check the directory exists.
if(!file_exists($this->include_path))
{
throw new Exception("Bad Include Path Given");
}
}
// .... more stuff ....
}
You can't use expression (.) in field initializer. See example one in PHP manual
Yes, however, property values defined at compile time cannot be expressions.
See http://php.net/manual/en/language.oop5.static.php
Related
I want to make a PHP class, lets say Myclass.php. Now inside that class I want to define just the class itself and some instance variables. But all the methods must come from a Myclass_methods.php file. Can I just include that file into the class body?
I have good reasons why I want to seperate this. In short, I'll have a backend in which I can change the business logic of a class, while all other things must remain untouched. The system maintains all the ORM and other stuff for me.
But if this is a bad idea, it might be better to re-generate the whole class file after editing the business logic (so, the user-defined methods in this case).
Performance question: If during one request Myclass.php is included just once, actually that Myclass_methods.php should also be included just once. Might be wrong. Experts?
No. You cannot include files in the class body.
In a file defining a class, you may only include files in a method body or outside the class body.
From your description I take you want this:
<?php // MyClass.php
class MyClass
{
protected $_prop;
include 'myclass-methods.php';
}
<?php // myclass-methods.php
public function myMethod()
{
$this->$_prop = 1;
}
Running this code will result in
Parse error: syntax error, unexpected T_INCLUDE, expecting T_FUNCTION
What is possible though is this
<?php // MyClass.php
class MyClass
{
protected $_prop;
public function __construct() // or any other method
{
include 'some-functions.php';
foo($b); // echoes 'a';
}
}
<?php // some-functions.php
$b = 'a';
function foo($str)
{
echo $str;
}
Doing it this way, will import the contents of the include file into the method scope, not the class scope. You may include functions and variables in the include file, but not methods. You could but should not put entire scripts into it as well and change what the method does, e.g.
<?php // MyClass.php
// ...
public function __construct($someCondition)
{
// No No Code here
include ($someCondition === 'whatever') ? 'whatever.php' : 'default.php';
}
// ...
<?php // whatever.php
echo 'whatever';
<?php // default.php
echo 'foo';
However, patching the class this way to exhibit different behavior is not how you should do it in OOP. It's just plain wrong and should make your eyes bleed.
Since you want to dynamically change behavior, extending the class is also not a good option (see below why). What you really will want to do is write an interface and make your class use objects implementing this interface, thus making sure the appropriate methods are available. This is called a Strategy Pattern and works like this:
<?php // Meowing.php
interface Meowing
{
public function meow();
}
Now you got the contract that all Meowing Behaviors must obey, namely having a meow method. Next define a Meowing Behavior:
<?php // RegularMeow.php
class RegularMeow implements Meowing
{
public function meow()
{
return 'meow';
}
}
Now to use it, use:
<?php // Cat.php
class Cat
{
protected $_meowing;
public function setMeowing(Meowing $meowing)
{
$this->_meowing = $meowing;
}
public function meow()
{
$this->_meowing->meow()
}
}
By adding the Meowing TypeHint to setMeowing, you make sure that the passed param implements the Meowing interface. Let's define another Meowing Behavior:
<?php // LolkatMeow.php
class LolkatMeow implements Meowing
{
public function meow()
{
return 'lolz xD';
}
}
Now, you can easily interchange behaviors like this:
<?php
require_once 'Meowing.php';
require_once 'RegularMeow.php';
require_once 'LolkatMeow.php';
require_once 'Cat.php';
$cat = new Cat;
$cat->setMeowing(new RegularMeow);
echo $cat->meow; // outputs 'meow';
// now to change the behavior
$cat->setMeowing(new LolkatMeow);
echo $cat->meow; // outputs 'lolz xD';
While you also could have solved the above with inheritance by defining an abstract BaseCat and meow method and then deriving concrete RegularCat and Lolkat classes from that, you have to consider what you want to achieve. If your cats will never change the way they meow, go ahead and use inheritance, but if your RegularCat and Lolkat is supposed to be able to do arbitrary meows, then use the Strategy pattern.
For more design patterns in PHP, check these resources:
http://www.php.net/manual/en/language.oop5.patterns.php
http://www.ibm.com/developerworks/library/os-php-designptrns/
http://www.fluffycat.com/PHP-Design-Patterns/
http://sourcemaking.com/design_patterns
Might it not be an idea to create the core class with the relevant base functionality and then extend this with the required methods - it seems like a more logical approach.
I'll start by saying I'm not too clear why this problem is not best solved using a base class containing the methods, subclasses containing the data, and dynamic class loading. I'll assume you have a good reason.
Once your provider supports PHP 5.4 you can do what you want using traits.
Code File:
if ($pet === 'dog') include 'dog.php';
elseif ($pet === 'cat') include 'cat.php';
else die('Unknown pet');
class Pet {
use PetSounds;
}
$myPet = new Pet();
$myPet->speak();
File cat.php
trait PetSounds {
function speak() { echo 'meow'; }
}
File dog.php
trait PetSounds {
function speak() { echo 'woof'; }
}
You could make this even cleaner by naming both include files the same, putting them in different subdirectories, and using set_include_path() or defining an __autoload() function to select between them. Like I said though, this same problem could be solved better using inheritance. If you have a multiple-inheritance type problem though, if for instance you have four kinds of pets with five kinds of colors with three hair types and you need a different combination of methods for each of the 60 different classes, this is the right solution.
5.4 is currently just a Release Candidate (as of 2/24/2012) and even once released most hosts will not support it for many months - mine took 18 months after 5.3 was released before they would support it. Until then you must write entirely separate and complete class files. You can however format your classes with an eventual change to traits in mind.
Right now you can partially get what you want using magic methods and have an easy upgrade to traits when they are available.
Code File:
if ($pet === 'dog') include 'dog.php';
elseif ($pet === 'cat') include 'cat.php';
else die('Unknown pet');
class Pet {
public function __call($name, array $arguments)
{
array_unshift($arguments, $this);
return call_user_func_array("TraitFunc_$name", $arguments);
}
}
$myPet = new Pet();
$myPet->speak();
File cat.php
function TraitFunc_speak(Pet $that) { echo 'meow'; }
File dog.php
function TraitFunc_speak(Pet $that) { echo 'woof'; }
You are limited however in that your functions can not access private and protected class properties and methods and you can not use this method to provide magic methods such as __get(). Traits will solve both of those limitations.
What about using traits for this? Would that be an acceptable option? This is something I am currently experimenting with and it seems to work quite while.
A simplified version of what I am doing is basically like this. I have an application with shared core files and multiple projects. Within those projects i have modules. I want to have functions that are available for the entire project on a core level but only for that specific project.
My project controller
if(is_file(PROJECT_PATH.'/project_extensions.trait.php')){
// additional functions for this specific project
require_once(PROJECT_PATH.'/project_extensions.trait.php');
}else{
// no additional functions
trait Extensions{};
}
Class Project{
USE Extensions;
// default functions shared between all projects
function shared_stuff(){
}
}
Extensions file
trait Extensions{
// project-specific extensions
function this_project_only(){
echo 'Project Only';
}
}
Module file in the project
class MyModule extends Modules{ // modules extends projects in a different class not relevant here
function do_something(){
echo $this->project_only();
}
}
Since PHP5.4 release you can create dynamic objects like this: https://github.com/ptrofimov/jslikeobject
But this is scarcely the best practice.
Reviving an old question but this is a fairly simple solution. Do you need the common function calls to be exclusive to your class? If not, simply include your common function file(s) within the same scope as your class. You will need to create methods in your class but they will only need to call the common function. Here's a simple SOAP server example:
<?php
include 'post_function.php';
$server = new SoapServer( null, array('uri' => "http://localhost/") );
$server->setClass( 'postsoapclass' );
$server->handle();
class postsoapclass
{
public function animalNoise( $animal )
{
return get_animal_noise($animal);
}
}
?>
post_function.php
<?php
function get_animal_noise($animal)
{
if(strtolower(trim($animal)) == 'pig')
{
return 'Oink';
}
else
{
return 'This animal is mute';
}
}
?>
I have had to do what you are describing in cases where I maintain a free version and a premium version of the same software. Because, as #Gordon noted, you cannot do exactly this:
class SomeClass {
premium_file = "premium.php";
if (file_exists($premium_file)) {
require($premium_file);
}
Instead I do this:
premium_file = "premium.php";
if (file_exists($premium_file)) {
require($premium_file);
}
class SomeClass {
...
For functions you want to reference, create class methods in the main class, and call the included file's method, passing the $this pointer as a parameter. So that I can tell at a glance where functions are, I will prefix the name of the included functions as shown below:
class SomeClass {
...
// Premium functions
public function showlist() {
premium_showlist($this);
}
You can include or require before declaring your class like below:
require 'path-to-file';
class myClass{
function show($uid){
}
}
The answer is yes, for example:
Into class construct, pass to the function (that's into the included file) values as params:
$this->wpd = $this->wpdopt = 'something';
include_once('/common/functions_common.php');
$this->wpdb = wpquery($sql='', $mode='', $this->wpd);
Into the included functions_common.php file:
function wpquery($sql, $mode, $wdp)
{
if(!empty($wdp))
{ return true; } else { return false; }
}
Into class methods:
$sql = "UPDATE ..... SET ... WHERE LOWER(user_email) = . ...";
$this->wpdb = wpquery($sql,'update',$this->wpd);
OR
$retval_var = $this->wpdb = wpquery($sql,'update',$this->wpd);
OR even
$this->var = $this->wpdb = wpquery($sql,'update',$this->wpd);
Cheers to all the lovely and cool people
I came across this recently, and came up with a solution, that helped in my case. I wanted many functions in a class, but the class became bloated, so wanted to separate out the class functions into groups for readability. It took a little time to accomplish, but since the functions of the class didn't rely (much) on $this, I removed "$this" from the class functions and created several helper files to include those functions. When $this was necessary, I could nevertheless move the function into a helper file, by passing $this to the function, adding public set/get functions where necessary. It's a hack, but it's sure to help someone
class myClass
{
var x;
function myClass()
{
$this->x = 0;
}
function myFunc1Group1()
{
$x = $this->x;
$x++;
$this->x = $x;
}
function myFunc2Group1(){}
function myFunc1Group2(){}
function myFunc2Group2(){}
}
can be worked around to
class myClass
{
var x;
function myClass()
{
$this->x = 0;
}
function doSomething()
{
// not called on $this but takes $this as a parameter
myFunc1Group1($this);
}
}
and helper function set 1
function myFunc1Group1($THIS_OBJECT)
{
$x = $THIS_OBJECT->getX();
$x++;
$THIS_OBJECT->setX($x);
}
function myFunc2Group1($THIS_OBJECT){}
and helper function set 2, etc.
Probably not the best route in all cases, but helped me out a lot. Basically the class functions were only to construct and delegate, and the calculations were put into helpers.
I was wondering if it's possible to create a function and pass it a class name. The function then checks if an instance of the class currently exists, if it does not it create an instance of the class. Furthermore if possible make that variable global and require it to be returned. I realize that returning may be the only option.
function ($class_name) {
// Check if Exists
// __autoload will automatically include the file
// If it does not create a variable where the say '$people = new people();'
$class_name = new $class_name();
// Then if possible make this variable a globally accessible var.
}
Is this possible or am I being crazy?
eval is pretty much the only way to do this. It is very important you make sure this isn't provided by user input, like from $_GET or $_POST values.
function create_or_return($class_name) {
if(! class_exists($class_name)) {
eval("class $class_name { }");
// put it in the global scope
$GLOBALS[$class_name] = new $class_name;
}
}
create_or_return("Hello");
var_dump($GLOBALS['Hello']);
/*
class Hello#1 (0) {
}
*/
You can't really make it globally accessible because PHP doesn't have a global object like javascript does. But you can't simply make a container holding the object.
PHP has a function called class_exists($class_name), returns a bool.
http://www.php.net/manual/en/function.class-exists.php
Something along the lines of:
function some_fumction($class_name) {
if(class_exists($class_name)) {
return new $class_name;
} else {
throw new Exception("The class $class_name does not exist");
}
}
Lets say in the very first script, which always executes first, I defined something:
define ('ROOTDIR', dirname(__FILE__));
define ('ROOTDIR_ASSETS', ROOTDIR.'/assets');
now a class:
class PictureGallery
{
const PATH = ROOTDIR.'/imgs';
php say: syntax error, unexpected '.' expecting ' ' or ';'.
How to work it around?
you can't have a class constant defined with string concatenation.
You'll need to use a member variable. If you don't want this changed, I would suggest making it private and only creating a getter to access it.
class PictureGallery
{
private $_path;
public function __construct()
{
$this->_path = ROOTDIR.'/imgs';
}
public function getPath()
{
return $this->_path;
}
}
OR
You could also calculate the value before defining the class, however this is a messy solution.
define('IMGDIR', ROOTDIR.'/imgs');
class PictureGallery
{
const PATH = IMGDIR;
...
}
Class constants is PHP must be a constant expression. So you either have to create another defined constant with the full path or you have to inject the path into the constructor of the class. Or just set in in the constructor.
What is the best way to make a variable accessable to all classes.
For example, I want to have a configuration file (Call it config.php) that is going to have a variable like so:
$server_url = "www.myaddress.com";
And I have a main library type file that contains a bunch of classes that need to access the $server_url. So here begins that main library file:
require 'config.php';
class one {
function a() {
$html = "<a href='$server_url/main.php'>LINK</a>"
return $html;
}
function b() {
$html = "<a href='$server_url/about.php'>LINK</a>"
return $html;
}
}
class two {
function new() {
$html = "<a href='$server_url/blah.php'>LINK</a>
}
}
What would be the best way to make $server_url from the config.php available to every function? Or at least available to all the functions in a class?
Personally I would use a static entity to hold all configuration values.
Usually, most php applications have a single entry point (index.php) that can load up the config.php file and make the static entity available from that point.
If your application has multiple entry points, then you will need to include config.php in each of these points.
Something like this:
<?php
class Configurator{
private static $_configuration = array();
public static function write($key, $value) {
self::$_configuration[$key] = $value;
}
public static function read($key) {
return self::$_configuration[$key];
}
}
Configurator::write('server', 'http://localhost');
Configurator::read('server');
?>
CakePHP has a similar class: http://api.cakephp.org/view_source/configure/
Make the config into a class in itself and use a static methods either along the line of serverUrl() or get('server_url'). Then call them like any other static methods to classes (I'll choose the latter in this example):
$html = "<a href='" . Config::get ('server_url') . "/main.php'>LINK</a>";
The config class could be pretty slim, use a constructor like:
public function __construct (array $config)
{
foreach ($config as $key => $value)
{
$this->$key = $value;
}
}
And add the get() method along these lines:
public function get ($key)
{
return $this->$key;
}
This way you can read the config from an array that you can have as a separate, actual config file, and reuse the same code for multiple projects.
You'll also be able to access the variables from anywhere in the project and you'll get a sort of pseudo-namespacing (in case the project needs to run on an older version of PHP).
Please, don't copy the code verbatim, it's written as an example.
think of globals are evil. Try to use design patterns to get access to some configs globally.
I'm a big fan of singletons to get global access to objects, arrays or other data-types.
<?php
class st {
static $_this;
function __construct(){
self::$_this = $this;
}
static function &getInstance(){
return self::$_this
}
static function set($key, $value){
self::$_this[$key] = $value;
}
static function &get($key){
return self::$_this[$key];
}
}
// Usage
new st();
st::set('foo', 'bar');
// In some class
st::get('foo'); //return 'bar'
// Or when there are some classes/objects
st::getInstance()->foo->bar();
$st =& st::getInstance();
$st->foo->bar();
?>
Roughly wrote down a small singleton, but don't know whether there is a syntax error.
While handling with getInstance it's certain that you define the variable by reference =&
Define a constant in config.php like:
define('SERVER_URL', '...');
In your class:
echo SERVER_URL;
What works for me the best is to use a config file like config.ini
And then to use $my_config = parse_ini_file(file path/config.ini');
Now everywhere in my code including inside functions and classes, I will use
The PHP superglobal like this:
$GLOBALS["my_config"]['my_global_var']
I want to make a PHP class, lets say Myclass.php. Now inside that class I want to define just the class itself and some instance variables. But all the methods must come from a Myclass_methods.php file. Can I just include that file into the class body?
I have good reasons why I want to seperate this. In short, I'll have a backend in which I can change the business logic of a class, while all other things must remain untouched. The system maintains all the ORM and other stuff for me.
But if this is a bad idea, it might be better to re-generate the whole class file after editing the business logic (so, the user-defined methods in this case).
Performance question: If during one request Myclass.php is included just once, actually that Myclass_methods.php should also be included just once. Might be wrong. Experts?
No. You cannot include files in the class body.
In a file defining a class, you may only include files in a method body or outside the class body.
From your description I take you want this:
<?php // MyClass.php
class MyClass
{
protected $_prop;
include 'myclass-methods.php';
}
<?php // myclass-methods.php
public function myMethod()
{
$this->$_prop = 1;
}
Running this code will result in
Parse error: syntax error, unexpected T_INCLUDE, expecting T_FUNCTION
What is possible though is this
<?php // MyClass.php
class MyClass
{
protected $_prop;
public function __construct() // or any other method
{
include 'some-functions.php';
foo($b); // echoes 'a';
}
}
<?php // some-functions.php
$b = 'a';
function foo($str)
{
echo $str;
}
Doing it this way, will import the contents of the include file into the method scope, not the class scope. You may include functions and variables in the include file, but not methods. You could but should not put entire scripts into it as well and change what the method does, e.g.
<?php // MyClass.php
// ...
public function __construct($someCondition)
{
// No No Code here
include ($someCondition === 'whatever') ? 'whatever.php' : 'default.php';
}
// ...
<?php // whatever.php
echo 'whatever';
<?php // default.php
echo 'foo';
However, patching the class this way to exhibit different behavior is not how you should do it in OOP. It's just plain wrong and should make your eyes bleed.
Since you want to dynamically change behavior, extending the class is also not a good option (see below why). What you really will want to do is write an interface and make your class use objects implementing this interface, thus making sure the appropriate methods are available. This is called a Strategy Pattern and works like this:
<?php // Meowing.php
interface Meowing
{
public function meow();
}
Now you got the contract that all Meowing Behaviors must obey, namely having a meow method. Next define a Meowing Behavior:
<?php // RegularMeow.php
class RegularMeow implements Meowing
{
public function meow()
{
return 'meow';
}
}
Now to use it, use:
<?php // Cat.php
class Cat
{
protected $_meowing;
public function setMeowing(Meowing $meowing)
{
$this->_meowing = $meowing;
}
public function meow()
{
$this->_meowing->meow()
}
}
By adding the Meowing TypeHint to setMeowing, you make sure that the passed param implements the Meowing interface. Let's define another Meowing Behavior:
<?php // LolkatMeow.php
class LolkatMeow implements Meowing
{
public function meow()
{
return 'lolz xD';
}
}
Now, you can easily interchange behaviors like this:
<?php
require_once 'Meowing.php';
require_once 'RegularMeow.php';
require_once 'LolkatMeow.php';
require_once 'Cat.php';
$cat = new Cat;
$cat->setMeowing(new RegularMeow);
echo $cat->meow; // outputs 'meow';
// now to change the behavior
$cat->setMeowing(new LolkatMeow);
echo $cat->meow; // outputs 'lolz xD';
While you also could have solved the above with inheritance by defining an abstract BaseCat and meow method and then deriving concrete RegularCat and Lolkat classes from that, you have to consider what you want to achieve. If your cats will never change the way they meow, go ahead and use inheritance, but if your RegularCat and Lolkat is supposed to be able to do arbitrary meows, then use the Strategy pattern.
For more design patterns in PHP, check these resources:
http://www.php.net/manual/en/language.oop5.patterns.php
http://www.ibm.com/developerworks/library/os-php-designptrns/
http://www.fluffycat.com/PHP-Design-Patterns/
http://sourcemaking.com/design_patterns
Might it not be an idea to create the core class with the relevant base functionality and then extend this with the required methods - it seems like a more logical approach.
I'll start by saying I'm not too clear why this problem is not best solved using a base class containing the methods, subclasses containing the data, and dynamic class loading. I'll assume you have a good reason.
Once your provider supports PHP 5.4 you can do what you want using traits.
Code File:
if ($pet === 'dog') include 'dog.php';
elseif ($pet === 'cat') include 'cat.php';
else die('Unknown pet');
class Pet {
use PetSounds;
}
$myPet = new Pet();
$myPet->speak();
File cat.php
trait PetSounds {
function speak() { echo 'meow'; }
}
File dog.php
trait PetSounds {
function speak() { echo 'woof'; }
}
You could make this even cleaner by naming both include files the same, putting them in different subdirectories, and using set_include_path() or defining an __autoload() function to select between them. Like I said though, this same problem could be solved better using inheritance. If you have a multiple-inheritance type problem though, if for instance you have four kinds of pets with five kinds of colors with three hair types and you need a different combination of methods for each of the 60 different classes, this is the right solution.
5.4 is currently just a Release Candidate (as of 2/24/2012) and even once released most hosts will not support it for many months - mine took 18 months after 5.3 was released before they would support it. Until then you must write entirely separate and complete class files. You can however format your classes with an eventual change to traits in mind.
Right now you can partially get what you want using magic methods and have an easy upgrade to traits when they are available.
Code File:
if ($pet === 'dog') include 'dog.php';
elseif ($pet === 'cat') include 'cat.php';
else die('Unknown pet');
class Pet {
public function __call($name, array $arguments)
{
array_unshift($arguments, $this);
return call_user_func_array("TraitFunc_$name", $arguments);
}
}
$myPet = new Pet();
$myPet->speak();
File cat.php
function TraitFunc_speak(Pet $that) { echo 'meow'; }
File dog.php
function TraitFunc_speak(Pet $that) { echo 'woof'; }
You are limited however in that your functions can not access private and protected class properties and methods and you can not use this method to provide magic methods such as __get(). Traits will solve both of those limitations.
What about using traits for this? Would that be an acceptable option? This is something I am currently experimenting with and it seems to work quite while.
A simplified version of what I am doing is basically like this. I have an application with shared core files and multiple projects. Within those projects i have modules. I want to have functions that are available for the entire project on a core level but only for that specific project.
My project controller
if(is_file(PROJECT_PATH.'/project_extensions.trait.php')){
// additional functions for this specific project
require_once(PROJECT_PATH.'/project_extensions.trait.php');
}else{
// no additional functions
trait Extensions{};
}
Class Project{
USE Extensions;
// default functions shared between all projects
function shared_stuff(){
}
}
Extensions file
trait Extensions{
// project-specific extensions
function this_project_only(){
echo 'Project Only';
}
}
Module file in the project
class MyModule extends Modules{ // modules extends projects in a different class not relevant here
function do_something(){
echo $this->project_only();
}
}
Since PHP5.4 release you can create dynamic objects like this: https://github.com/ptrofimov/jslikeobject
But this is scarcely the best practice.
Reviving an old question but this is a fairly simple solution. Do you need the common function calls to be exclusive to your class? If not, simply include your common function file(s) within the same scope as your class. You will need to create methods in your class but they will only need to call the common function. Here's a simple SOAP server example:
<?php
include 'post_function.php';
$server = new SoapServer( null, array('uri' => "http://localhost/") );
$server->setClass( 'postsoapclass' );
$server->handle();
class postsoapclass
{
public function animalNoise( $animal )
{
return get_animal_noise($animal);
}
}
?>
post_function.php
<?php
function get_animal_noise($animal)
{
if(strtolower(trim($animal)) == 'pig')
{
return 'Oink';
}
else
{
return 'This animal is mute';
}
}
?>
I have had to do what you are describing in cases where I maintain a free version and a premium version of the same software. Because, as #Gordon noted, you cannot do exactly this:
class SomeClass {
premium_file = "premium.php";
if (file_exists($premium_file)) {
require($premium_file);
}
Instead I do this:
premium_file = "premium.php";
if (file_exists($premium_file)) {
require($premium_file);
}
class SomeClass {
...
For functions you want to reference, create class methods in the main class, and call the included file's method, passing the $this pointer as a parameter. So that I can tell at a glance where functions are, I will prefix the name of the included functions as shown below:
class SomeClass {
...
// Premium functions
public function showlist() {
premium_showlist($this);
}
You can include or require before declaring your class like below:
require 'path-to-file';
class myClass{
function show($uid){
}
}
The answer is yes, for example:
Into class construct, pass to the function (that's into the included file) values as params:
$this->wpd = $this->wpdopt = 'something';
include_once('/common/functions_common.php');
$this->wpdb = wpquery($sql='', $mode='', $this->wpd);
Into the included functions_common.php file:
function wpquery($sql, $mode, $wdp)
{
if(!empty($wdp))
{ return true; } else { return false; }
}
Into class methods:
$sql = "UPDATE ..... SET ... WHERE LOWER(user_email) = . ...";
$this->wpdb = wpquery($sql,'update',$this->wpd);
OR
$retval_var = $this->wpdb = wpquery($sql,'update',$this->wpd);
OR even
$this->var = $this->wpdb = wpquery($sql,'update',$this->wpd);
Cheers to all the lovely and cool people
I came across this recently, and came up with a solution, that helped in my case. I wanted many functions in a class, but the class became bloated, so wanted to separate out the class functions into groups for readability. It took a little time to accomplish, but since the functions of the class didn't rely (much) on $this, I removed "$this" from the class functions and created several helper files to include those functions. When $this was necessary, I could nevertheless move the function into a helper file, by passing $this to the function, adding public set/get functions where necessary. It's a hack, but it's sure to help someone
class myClass
{
var x;
function myClass()
{
$this->x = 0;
}
function myFunc1Group1()
{
$x = $this->x;
$x++;
$this->x = $x;
}
function myFunc2Group1(){}
function myFunc1Group2(){}
function myFunc2Group2(){}
}
can be worked around to
class myClass
{
var x;
function myClass()
{
$this->x = 0;
}
function doSomething()
{
// not called on $this but takes $this as a parameter
myFunc1Group1($this);
}
}
and helper function set 1
function myFunc1Group1($THIS_OBJECT)
{
$x = $THIS_OBJECT->getX();
$x++;
$THIS_OBJECT->setX($x);
}
function myFunc2Group1($THIS_OBJECT){}
and helper function set 2, etc.
Probably not the best route in all cases, but helped me out a lot. Basically the class functions were only to construct and delegate, and the calculations were put into helpers.