gistfile1.php

<?php

class Test {
    
    private $_testMethodArray;

    public function testDeleteFromMethodArray()
    {
        $this->testMethodArray();
        unset($this->testMethodArray()[0]);
        print_r($this->testMethodArray());
        //i want array(2) but im getting array(1, 2)
    }

    public function testMethodArray()
    {
        if(!isset($this->_testMethodArray))
        {
            $this->_testMethodArray = array(1, 2);
        }
        return $this->_testMethodArray;
    }
    
}