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