strlen()-To find the length of a string

To find the length of a string, we use a function strlen(). Let's use this function to find the length of a string.

<?php
echo strlen("Learn PHP");
?>

The output of the above code will be:

9

Alternatively, we can write the PHP script like the way below. The output will be the same as above.

<?php
$str="Learn PHP";
$length=strlen($str);
echo $length;
?>