A string is a series of characters that can be stored in a variable. In PHP, strings are often delimited by single quotes.
$a = 'Hello';String Concatenation
PHP has two string operators. The dot symbol is known as the concatenation operator(.). It combines two strings into one. It also has an accompanying assignment operator (.=), which appends the right-hand string to the left-hand string variable.
$b = $a . ' World'; // Hello World$a .= ' World'; // Hello World
Delimiting Strings
PHP strings can be delimited in four different ways. There are two common notations: double quote (" ") and single quote (
