PHP | strlen() Function

The strlen() is a built-in function in PHP which returns the length of a given string. It takes a string as a parameter and returns its length. It calculates the length of the string including all the whitespaces and special characters.

Syntax:

strlen($string)

Parameters: The strlen() fucntion accepts only one parameter $string which is mandatory. This parameter represents the string whose length is needed to be returned.

Return Value: The fucntion returns the length of the $string including all the whitespaces and special characters.

Examples:

Input : "abc"
Output : 3

Input : "
 chetna ;"
Output : 10
Explanation : '
' is considered as a single character
              as it is an escape sequence.

Input : "geeks for geeks" 
Output :15

Below programs illustrate the strlen() function in PHP:

Program 1: The below program demonstrates the use of strlen() function in PHP.

Output:

15

Program 2: The below program demonstrates the use of strlen() function in PHP where the string has special characters and escape sequences.

Output:

10

Reference:
http://php.net/manual/en/function.strlen.php