how to add string in php code example

Example 1: how to combine variables and text into a string php

<?php
$number = 8;
$txt = "the number is".$number.", ok?"; //Use a dot to combine
echo $txt;
?>

Example 2: php append string

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

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

Example 3: concatenate string php

<?php 

// First String 
$a = 'Hello'; 

// Second String 
$b = 'World!'; 

// Concatenation Of String 
$c = $a.$b; 

// print Concatenate String 
echo " $c \n"; 
?>

Example 4: php concatenate two variables

$string = "the color is ";
$string .= "red";

echo $string; // gives: the color is red