PHP for getting an array of data in the express_entry_list

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I need help:( I created 2 express data objects: States and People. Under States, I have a one attribute - State Name and under People, I have Person’s Name, Bio, Photo. Only one State can have a person, but a person can have my states associated to a person. So I made an association one person -> many states and many states -> one person.

How do I output an array of states (separated by a comma) in my php template?

<div class="row"> 
                     <div class="col-sm-4">
                        <?php
            $personPhoto = $item->getEntry()->getPersonPhoto();
            if (is_object($personPhoto)) { ?>
               <img src="<?php echo $personPhoto->getRelativePath(); ?>">
            <?php } ?>
                      </div>
                      <div class="col-sm-8">
                        <h1><?=$item->getEntry()->getPersonName();?></h1>
                        <p><?=$item->getEntry()->getPersonBio();?></p>                                                                        
                          <p>States: ??</p>                       
                      </div>
                  </div>