Are there any best practices for using variables to call class methods in PHP?

When using variables to call class methods in PHP, it is important to ensure that the variable contains the correct method name and that the method actually exists within the class. One best practice is to use the `method_exists()` function to check if the method exists before attempting to call it using the variable. 

class MyClass {
    public function myMethod() {
        echo "Hello, World!";
    }
}

$methodName = 'myMethod';

if (method_exists('MyClass', $methodName)) {
    $obj = new MyClass();
    $obj->$methodName();
} else {
    echo "Method does not exist.";
}

Keywords

variables class methods PHP object-oriented programming function calls

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