IsValidEmail() returns 1 if the string represents a valid email address, and 0 otherwise.
isValidEmail("john.doe@gmail.com") - checks whether john.doe@gmail.com is technically a valid email address (not necessarily an existing one).
IsValidEmail() returns 1 if the string represents a valid email address, and 0 otherwise.
isValidEmail("john.doe@gmail.com") - checks whether john.doe@gmail.com is technically a valid email address (not necessarily an existing one).