How to Concatenate two or more string in PHP

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We can concatenate two or more string in PHP by concatenation operator(“.”);
Example 1 :

<?php
$string1="Hello";
$string2="World !!";
$string3=$string1.$string2;
echo $string3;
?>

<?php

$string1="Hello";

$string2="World !!";

$string3=$string1.$string2;

echo $string3;

Output : HelloWorld !!
Example 2: if you want to add space between two strings

<?php
$string1="Hello";
$string2="World !!";
$string3=$string1." ".$string2;
echo $string3;
?>

<?php

$string1="Hello";

$string2="World !!";

$string3=$string1." ".$string2;

echo $string3;

Output : Hello World !!
Example 3: Concatenate more than two strings

<?php
$string1="Welcome to";
$string2="PHPGurukul";
$string3="Programming Blog";
$string4=$string1.$string2.$string3;
echo $string4;
?>

<?php

$string1="Welcome to";

$string2="PHPGurukul";

$string3="Programming Blog";

$string4=$string1.$string2.$string3;

echo $string4;

Output : Welcome to PHPGurukul Programming Blog

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