String Operators in PHP : Tutorial



There are two String operators in PHP.

1. Concatenation Operator "." (dot)

2. Concatenation Assignment Operator ".=" (dot equals)


Concatenation Operator

Concatenation is the operation of joining two character strings/variables together.

In PHP we use . (dot) to join two strings or variables.

Below are some examples of string concatenation:
<?php

 echo "Hello "."there!";
 echo "My"." "."name"."is"." "."Mike";

?>
Output

Hello there! My name is Mike
Below are some examples of string concatenation including variables:
<?php

 $message = "Hello there!";
 $name = "Mike";
 $age  = 19;

 echo $message;
 echo "My name is ".$name;
 echo "I am ".$age;

?>
Output

Hello there! My name is Mike I am 19


Concatenation Assignment Operator (.=)



Example :
<?php

 $message = "Hello";


 echo $message.=" there!"; //is same as $message = $message ." there!"

?>
Output

Hello there!