<?php
 
class test {
    function __construct(){}
 
    private function test1(){
        echo "In test1", PHP_EOL;
    }
    private function test2(){
        echo "test2", PHP_EOL;
    }
    protected function test3(){
        return "test3" . PHP_EOL;
    }
    public function __call($method,$arguments) {
        if(method_exists($this, $method)) {
            $this->test1();
            return call_user_func_array(array($this,$method),$arguments);
        }
    }
}
 
$a = new test;
$a->test2();
echo $a->test3();
/*
 * Output:
 * In test1
 * test2
 * In test1
 * test3
 */

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