rename()
— Renames a file or directory Description bool rename ( string $oldname , string $newname [, resource $context ] ) Attempts to rename oldname to newname .
Category: Php Functions
fwrite() example
Description int fwrite ( resource $handle , string $string [, int $length ] ) fwrite() writes the contents of string to the file stream pointed to by handle .
chr — Return a specific character
Description string chr ( int $ascii ) Returns a one-character string containing the character specified by ascii .