Concatenating strings having dot(period) in php [duplicate]

This question already has an answer here:

• How to combine two strings together? 13 answers

Googled but couldn't find an answer.

I have

echo "<input type = 'text' value = ".$value." name = ".$input_id."/>";

$value or $input_id contains a dot which is conflicting with the dot used for concatenation. How do I escape it?

Thanks!