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Overloading PHP Functions

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Join Date: Oct 2004

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Overloading PHP Functions

Mar 11th, 2005

I know it is possible to overload PHP functions as I have seen this done with many of the prebuilt functions. My question is how do you declare an overloaded function? Everytime I try doing this I always get some error about missing arguments (even if there exsist a function with the same number of arguments)

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Re: Overloading PHP Functions

Mar 11th, 2005

Found this quote:

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PHP does not support function overloading, nor is it possible to undefine or redefine previously-declared functions.

and this quote:

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Method overloading is however permitted.

<?php
class A {
function A() { }

function ech() {
$a = func_get_args();
for( $t=0;$t<count($a); $t++ ) {
echo $a[$t];
}
}
}

$test = new A();
$test->ech(0,1,2,3,4,5,6,7,8,9);

?>

// output:
// 0123456789

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Re: Overloading PHP Functions

Mar 14th, 2005

//------------------------
<?php
class A{
function A(){};
}
?>
//---------------------

Dance Instructor is only refering to class constructor, not an example of function overloading.

it is sad though, but php doen't support function overloading.

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Re: Overloading PHP Functions

Feb 18th, 2008

i want to know that how to use function overloading in php

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Re: Overloading PHP Functions

Feb 18th, 2008

what is cake php......
is it new technology.......

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Re: Overloading PHP Functions

Feb 18th, 2008

i have to use a .net web service in my php application ...and i have no knowledge how to use .net web service in php but i know how to make a web service in .net...please reply me soon its urgent

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Re: Overloading PHP Functions

-1

Jun 17th, 2009

Actually, method overloading refers to the ability to use the same method/function name in multiple classes such as:

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
class test1
{
 
private $value;
 
//constructor
function test1(){}
 
//method
function setValue($value){
  $this->value=$value;
}
 
}
 
 
class test2
{
 
private $value;
 
//constructor
function test2(){}
 
//method
function setValue($value){
  $this->value=$value;
}
 
}
class test1
{

private $value;

//constructor
function test1(){}

//method
function setValue($value){
  $this->value=$value;
}

}


class test2
{

private $value;

//constructor
function test2(){}

//method
function setValue($value){
  $this->value=$value;
}

}

//in use:

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
<?php
$test1=new test1(); $test1->setValue(1);
$test2=new test2(); $test2->setValue(2);
?>
<?php
$test1=new test1(); $test1->setValue(1);
$test2=new test2(); $test2->setValue(2);
?>

As you can see, the same method name was used in both classes and can be called in the same php file. Hope this helps

Last edited by peter_budo; Jun 17th, 2009 at 4:19 am. Reason: Keep It Organized - For easy readability, always wrap programming code within posts in [code] (code blocks) and [icode] (inline code) tags.

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Re: Overloading PHP Functions

Jun 17th, 2009

•

Originally Posted by paradox814

I know it is possible to overload PHP functions as I have seen this done with many of the prebuilt functions. My question is how do you declare an overloaded function? Everytime I try doing this I always get some error about missing arguments (even if there exsist a function with the same number of arguments)

It's all about object overloading.

Read this http://www.onlamp.com/pub/a/php/2005...erloading.html
and
http://www.devshed.com/c/a/PHP/Overl...ng-with-PHP-5/

Last edited by adatapost; Jun 17th, 2009 at 12:45 am.

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