Call a PHP function dynamically

Question

Is there a way to call a function through variables?

For instance, I want to call the function Login(). Can I do this:

$varFunction = "Login"; //to call the function 

Can I use $varFunction?

Answer 1

Yes, you can:

$varFunction(); 

Or:

call_user_func($varFunction); 

Ensure that you validate $varFunction for malicious input.

---

For your modules, consider something like this (depending on your actual needs):

abstract class ModuleBase {   public function main() {     echo 'main on base';   } }  class ModuleA extends ModuleBase {   public function main() {     parent::main();     echo 'a';   } }  class ModuleB extends ModuleBase {   public function main() {     parent::main();     echo 'b';   } }  function runModuleMain(ModuleBase $module) {   $module->main(); } 

And then call runModuleMain() with the correct module instance.