PHP - Declare function in class based on condition - php

Question

Is there a way to do something like this:
class Test {
if(!empty($somevariable)) {
public function somefunction() {
}
}
}
I know this might not be best practice, but I need to do this for a very specific problem I have, so is there anyway to do it?
I just want that function to be included in the class if that variable (which is tied to a URL param) is not empty. As it is written now, I get Error: syntax error, unexpected T_VARIABLE, expecting T_FUNCTION
Thanks!

Answer 1

It depends on the your specific use case, and I don't have enough info to give a specific answer, but I can think of one possible fix.
Extend the class, using an if statement. Put everything except the one function in AbstractTest.
<?php
abstract class AbstractTest
{
// Rest of your code in here
}
if (!empty($somevariable)) {
class Test extends AbstractTest {
public function somefunction() {
}
}
} else {
class Test extends AbstractTest { }
}
Now, the class Test only has the method somefunction if $somevariable isn't empty. Otherwise it directly extends AbstractTest and doesn't add the new method.

Answer 2

Call the required function if the variable is not empty.
<?php
class Test {
public function myFunct() {
//Function description
}
}
$oTest = new Test();
if(!empty($_GET['urlParam'])) {
oTest->myFunc();
}
?>

Answer 3

class Test {
public function somefunction() {
}
}
is all you need actually.
Please note that a function inside a class is called 'method'.

Answer 4

AFAIK you cannot have a condition out of the method in class scope (if that flows)
Class Test {
if (empty($Var)){
public function Test_Method (){
}
}
}
Will not work. Why not have it constantly exisisting but only call the method when it's needed?
Example:
Class Test {
public function Some_Method(){
return 23094; // Return something for example purpose
}
}
Then from your PHP:
$Var = ""; // set an empty string
$Class = new Test();
if (empty($Var)){
echo $Class->Some_Method(); // Will output if $Var is empty
}
Perhaps you trying to validate a string within OOP scope, then take this example:
Class New_Test {
public $Variable; // Set a public variable
public function Set(){
$This->Variable = "This is not empty"; // When calling, $this->variable will not be empty
}
public function Fail_Safe(){
return "something"; // return a string
}
}
Then out of Scope:
$Class = new New_Test();
if (empty($Class->Variable)){
$Class->Fail_Safe();
} // Call failsafe if the variable in OOP scope is empty