PHP Concatenation Operators

PHP Compensation Operator is used to combine character strings.

OperatorDescription
.The PHP concatenation operator (.) is used to combine two string values to create one string.
.=Concatenation assignment.
Example:
<?php
    $name="John";
    $lastName="Travolta";
    echo $name." ".$lastName; // Outputs John Travolta
    
    $a="Hello";
    $a .= " John!";
    echo $a; // Outputs Hello John!
?>