append values to variable in php code example

Example 1: php append string

<?php
$a = "Hello ";
$b = $a . "World!"; // now $b contains "Hello World!"

$a = "Hello ";
$a .= "World!";     // now $a contains "Hello World!"
?>

Example 2: add more data to variable php

$a = "Hello ";
$a .= "World!";