anantamu.com
ECHO is used to display content on the browser. It executes very fast compare to "print".
.(Dot Operator): It is used to join two or more variables, It joins PHP code and HTML code.
<?php
$firstVariable='Welcome';
$SeconeVariable=' To PHP';
echo $firstVariable.$SeconeVariable;
print $firstVariable.$SeconeVariable;
?>
Result: Welcome To PHP