How can two variables be concatenated in PHP?

To concatenate two variables in PHP, you can use the dot (.) operator. This operator allows you to combine the values of two variables into a single string. Simply place the dot operator between the variables you want to concatenate, and assign the result to a new variable or output it directly.

$variable1 = "Hello";
$variable2 = "World";
$concatenated = $variable1 . $variable2;
echo $concatenated;