To concatenate two strings in PHP, you use the ______ operator.

To concatenate two strings in PHP, you use the dot (.) operator. The dot operator is specifically used for string concatenation. It allows you to combine multiple strings into a single string. When the dot operator is used between two string values, it joins them together to form a concatenated string. Learn more: https://www.php.net/manual/en/language.operators.string.php