Wordpress image porfolio - php

Question

i am new to wordress
i want to make image gallery from basic bootstrap template
i have this template for example:
<div class="row portfolio-images">
<div class="col-md-3">
<img src="">
<a class="title" >title</a>
</div>
<div class="col-md-3">
<img src="" alt="">
<a class="title" >title</a>
</div>
<div class="col-md-3">
<img src="" alt="">
<a class="title" >title</a>
</div>
<div class="col-md-3">
<img src="" alt="">
<a class="title" >title</a>
</div>
</div>
i want to know how to create image database or gallery in wordpress in the panel
and get the images url in an array and do something like this:
<div class="row portfolio-images">
<?php
for(the array){ ?>
<div class="col-md-3">
<img src="<?php echo image url ?> ">
<a class="title" ><?php echo image title ?></a>
</div>
<?php }?>
</div>
because im lost right now and i need some guidence

Answer 1

There are various plugins that you can use to generate the gallery. If you need to generate one without plugin then you can define a custom post type and then add images post on the relevant post type, which then can be listed on the required page.
Usually I use ACF plugin to generate custom field and then list it on the page. You can check it more here: http://www.advancedcustomfields.com/resources/gallery/