What is concatenation in php?Please answer the question if you know the answer.

Answer 1

Concatenation is the process of appending one string with another, which can be achieved with the dot operator in PHP, like this:
$text = "Hello ";
$text2 = "world!";
$text .= $text2;
echo $text;
The output is hello world.

Answer 2

i am not sure for php but in most programming languages concatenation means to concate two string like : "string1" + "string2" so result string is: "string1string2"

Answer 3

Vukan, if you use the + operator with a string you will get unexpected behavior. PHP will convert the string to a number and try to add it. If not possible, it will return 0.