String is a collection of character.
String can contain alpha numeric character.
While declaring string variable we need to set the value within a double('' '') or single (' ') inverted commas.
String Declaration :
Here $str, $str2, $str3 all are string type data.
If we run this program will get the above output. One or more variable can be print in a single echo keyword;
String Functions :
The main things we need to know that PHP provides huge number of String Functions. By using this functoins we can easily do many complex things in simple way.
strlen() - Returns the length of string
str_word_count() - This function returns the number of words inside the string
Full PHP String function list : PHP String Reference