How to remove random image load function?

I am using an open source script from github. The script loads files from a certain folder and displays them in a slideshow.

The author added a script to randomly display files from that folder. Now, what i need is for that function to be gone. I am guessing its in the script below, so my question to you guys is;

Can i remove the random load function for those files some how?

Thank you so much!

Jordy

<?php

class getFiles{

protected $dir;
protected $imageArray;


function __construct()
{
    $this->get_dir();
    $this->get_images();
}

protected function get_dir()
{
    $this->dir = getcwd();
}

protected function get_images()
{

    if(count(scandir($this->dir."/images")) != 2)
    {
        $this->imageArray = scandir($this->dir."/images");
    }
    else
    {
        die("There are no files in the directory");
    }

}



public function getImageArray()
{
    return $this->imageArray;
}

}

class sortFiles{

protected $sortedImageArray = [];


public function sortImageArray($imageArray)
{
    foreach ($imageArray as $imageFile ) 
    {  
        if($imageFile !== ".." && $imageFile !== ".")
        {

        $imagePath = $imageFile;
        $imageFile = (substr($imageFile, 0, -4));
        $BeginningPos = strpos($imageFile, '_');
        $beginningDate = (substr($imageFile, 0, $BeginningPos));

        $beginningDateformatted = str_replace("-","/", $beginningDate);

        $stringToStartTime = strtotime($beginningDateformatted);


        $EndingPos = strpos($imageFile, '_', $BeginningPos  + strlen('_'));
        $EndingPos = $EndingPos + 1;
        $EndingDate = (substr($imageFile, $EndingPos));
        $EndingDateformatted = str_replace("-","/", $EndingDate);
        $stringToEndTime = strtotime($EndingDateformatted);

        $time = time();

        if($time <= $stringToStartTime && $time >= $stringToEndTime)
            {
                array_push($this->sortedImageArray, $imagePath);

            }

        }

    }

}

public function getImageArray()
{
    if(count($this->sortedImageArray) != 0)
    {
        return $this->sortedImageArray;
    }
    else
    {
        die("There are no files in the time range");
    }
}

public function randomImageNum()
{
    $imageArrayLength = count($this->sortedImageArray);
    $imageRand = rand(0, $imageArrayLength-1);
    return $imageRand;
}

}

?>