How to concatenate two strings in PHP?
https://www.php.net/manual/en/language.operators.string.php
You can also use double quotes and curly braces as mentioned in one of the comments, but if you're just getting your head wrapped around the concepts stick with the dot.
<?php $name = "Abraham"; $string = "is a cool"; echo $name . $string; // 0r echo "$name$string"; //or $text = $name; $text .= $string; echo $text; ?>