Generic bitwise tester

generic_bitwise_tester

<?php

class BitwiseTester
{
    /**
     *
     * @var int
     */
    protected $flags = 0;
    
    /**
     * 
     * @param int $flag
     * @return $this
     */
    public function setFlag($flag)
    {
        $this->flags |= $flag;
        return $this;
    }
    
    /**
     * 
     * @param array $flags
     * @return $this
     */
    public function setFlags(array $flags)
    {
        foreach ($flags as $flag) {
            $this->setFlag($flag);
        }
        
        return $this;
    }
    
    /**
     * 
     * @return $this
     */
    public function clearFlags()
    {
        $this->flags = 0;
        return $this;
    }
    
    /**
     * 
     * @param int $flag
     * @return boolean
     */
    public function hasFlag($flag)
    {
        return (($this->flags & $flag) === $flag);
    }
}