In this tutorial you will learn the use of single and double quotes in echo statement also how to concatenate a string in php.
1. Double quote strings will display a host of escaped characters, and variables in the strings will be evaluated.
$name = “tut.julfi.com”;
echo “I love $name<br>”;
2. to display a back slash, you can escape it with another backslash \ .
List Of escape sequences for special characters :