What is the correct way to concatenate strings in PHP?

When concatenating strings in PHP, you can use the "." operator to combine two or more strings together. This operator allows you to join strings seamlessly without any spaces or additional characters between them. It is important to ensure that the strings you are concatenating are properly formatted and do not contain any syntax errors.

$string1 = "Hello";
$string2 = "World";
$concatenatedString = $string1 . $string2;
echo $concatenatedString;