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         


        

Answer 1

If it's in the same class:

$funcName = 'Login';

// Without arguments:
$this->$funcName();

// With arguments:
$this->$funcName($arg1, $arg2);

// Also acceptable:
$this->{$funcName}($arg1, $arg2)

If it's in a different class:

$someClass = new SomeClass(); // create new if it doesn't already exist in a variable
$someClass->$funcName($arg1, $arg2);

// Also acceptable:
$someClass->{$funcName}($arg1, $arg2)

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Tip:

If the function name is dynamic as well:

$step = 2;

$this->{'handleStep' . $step}($arg1, $arg2);
// or
$someClass->{'handleStep' . $step}($arg1, $arg2);

This will call handleStep1(), handleStep2(), etc. depending on the value of $step.