calling a class method from another class

[RoyHB]

A main program creates instances of 2 classes.

 

I'd like to be able to call a method in class1 from within class 2.

I'd like to use a public method within the instance of class 1 that was created in the main program rather than recreating class1 within class2

 

first experiment that I tried the public method within class1 was not visible to class 2

 

class 2 will only ever be used if class 1 has been previously loaded.

Can this be made to work?

 

Thanks

 

skeletal example:

<?php
     $firstClass = new class1();
     $secondClass = new class2();
     $secondClass->doSomething();
?>

<?php
     class class1 {
          public function someFunction() {
               ...do some stuff
          }
     }
?>          

 

<?php
     class class2 {
          function doSomething() {
               $firstClass->someFunction();
          }
     }
?>

[AyKay47]

why not make class2 extend class 1, then use parent::

[xyph]

You want to do something like this

 

<?php
     class class2 {
          function doSomething( class1 $firstClass ) {
               $firstClass->someFunction();
          }
     }
?>

 

Then

 

<?php
     $firstClass = new class1();
     $secondClass = new class2();
     $secondClass->doSomething( $firstClass );
?>

[AyKay47]

the example that xyph gave you is a method called typehinting...look here

for more info

[TeNDoLLA]

You could also just simply inheritate the class2 from the class1 to use class1's functions inside class2.

 

class Class1
{
function test1()
{
	echo 'Function from class1<br>';
}
}

class Class2 extends class1
{
function test2()
{
	echo 'Fcuntion from class2<br>';
}
}

$obj = new Class2();
$obj->test1(); // Function from class1
$obj->test2(); // Fcuntion from class2

[ignace]

You could also just simply inheritate the class2 from the class1 to use class1's functions inside class2.

 

why not make class2 extend class 1, then use parent::

 

We don't know what each class does since the OP did not give any concrete code. So it's best to advice composition over inheritance IMO.