What is the purpose of the strlen() function in PHP?

  • To count the number of characters in a string
  • To convert a string to uppercase
  • To remove leading and trailing whitespace
  • To extract a substring from a string
The strlen() function in PHP is used to count the number of characters in a string. It returns the length of the string as an integer. This function is commonly used for input validation or when working with string manipulation and truncation. Learn more: http://php.net/manual/en/function.strlen.php
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