I('post.email','','email');
int
boolean
float
validate_regexp
validate_url
validate_email
validate_ip
string
stripped
encoded
special_chars
unsafe_raw
url
number_int
number_float
magic_quotes
callback
I('post.email','','email');
int
boolean
float
validate_regexp
validate_url
validate_email
validate_ip
string
stripped
encoded
special_chars
unsafe_raw
url
number_int
number_float
magic_quotes
callback