While our PHP programming , in some cases we need to get the length of a string for processing. strlen() if the function in PHP to get the length of a string.
See the sample program with strlen() function:
<?php $variable="Check length"; echo strlen($variable); ?>
It will output the result
strlen function will count the blank spaces also contains in the string.
For looping through a string, we can use this function to know the end of loop by storing the length of string to a variable. And in other cases we can use this function for data checking like password length and all.
It will return 0 ( zero ) if the string is empty.