Generate cache key from method invocation

generate_cache_key.php

<?php
class MyClass {
	public function myFunction($myParam) {
		$callee = debug_backtrace(null, 2)[1];
		
		$method_string = $callee['class'].$callee['type'].$callee['function'].'('.implode(', ', $callee['args']).')';
		return $method_string;
	}
}

class Runner {
	public function run($param1, $param2) {
		$c = new MyClass();
		$r = $c->myFunction('test');
		var_dump($r);
	}
}

$c = new Runner();
$c->run('value1', 'value2');