How to make gallery photos even in PHP - php

Question

Here is my code for a gallery on the website that I am making
<h3>Gallery</h3>
<?php
include"includes/connection.php";
$sql = "select * from kategorije";
$res = mysqli_query($con, $sql);
while($row = mysqli_fetch_assoc($res))
{
?>
<h4 class="text-center"><?php echo ucwords($row['naziv']); ?></h4>
<?php
$id = $row['sifra'];
$sql1 = "select * from rad where kategorija = $id";
$res1 = mysqli_query($con, $sql1);
$n = mysqli_num_rows($res1);
if($n>0)
{
while($row1 = mysqli_fetch_assoc($res1))
{
$pid = $row1['sifra'];
?>
<div class="col-md-2 col_1">
<img src="uploads/<?php echo $row1['datoteka']; ?>" class="img-responsive" alt=""/>
</div>
<?php
}
}else{
?>
<div class="col-md-2 col_1">
<h6>No Images</h6>
</div>
<?php
}
?>
<div class="clearfix"></div>
<?php
}
?>
I need to make that all the photos in gallery have same height and width when they are uploaded, but I don't know how. I tried to insert this code, but it just doesn't work:
echo"<img src='$dir_path$files[$i]'style='width:150px;height:200px;'>
Also I tried in CSS but it won't work either.

Answer 1

Since you just want to display them in another size, you can achieve this by the way you tried, but with the correct syntax. I hope its this line of code where you want the resized image:
<img src="uploads/<?php echo `$row1['datoteka']; ?>" class="img-responsive" height="200" width="150" alt=""/>`
Let me know it it worked for you. It this wasen't the line you want to do it, keep in mind you simply have to follow the syntax:
<img src="http://url.com/pic.png" width="150" height="200">
Thats all. :)