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CI Validations

required // Returns FALSE if the form field is empty.

matches // Returns FALSE if the form field does not match the defined value of parameter.

is_unique // Returns FALSE if the form field is not unique to the table and field name in the parameter.

min_length // Returns FALSE if the form field is shorter than the parameter value.

max_length // Returns FALSE if the form field is longer than the parameter value.

exact_length // Returns FALSE if the form field is not exactly the parameter value.

greater_than // Returns FALSE if the form field is less than the parameter value or not numeric.

less_than // Returns FALSE if the form field is greater than the parameter value or not numeric.

alpha // Returns FALSE if the form field contains anything other than alphabetical characters.

alpha_numeric // Returns FALSE if the form field contains anything other than alpha-numeric characters.

alpha_dash // Returns FALSE if the field contains anything other than alpha-numeric characters, underscores or dashes.

numeric // Returns FALSE if the form field contains anything other than numeric characters.

integer // Returns FALSE if the form field contains anything other than an integer.

decimal // Returns FALSE if the form field contains anything other than a decimal number.

is_natural // Returns FALSE if the form field contains anything other than a natural number.

is_natural_no_zero // Returns FALSE if the form field contains anything other than a natural number, but not zero.

valid_email // Returns FALSE if the form field does not contain a valid email address.

valid_emails // Returns FALSE if any value provided in a comma separated list is not a valid email.

valid_ip // Returns FALSE if the supplied IP is not valid.

valid_base64 // Returns FALSE if the supplied string contains anything other than valid Base64 characters.

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