PHP » Operators » .

Syntax:
string1 . string2
string1
First string part.
string2
Second string part.

String concatenation.

The concatenation operator takes two strings and puts them together to one.

Examples

Code:
<?php

$s = "Hello " . "World";
print $s;

?>
Output:
Hello World
Explanation:

A string is made from two shorter strings.