codeigniter_tutorial

CodeIgniter
In the above example, we have used the required rule setting. There are many rules
available in the CodeIgniter, which are described below.
Validation Rule Reference
The following is a list of all the native rules that are available to use:
Rule Parameter Description Example
required
matches
regex_match
differs
is_unique
min_length
max_length
exact_length
greater_than
greater_than_equal_to
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Returns FALSE if the
form element is
empty.
Returns FALSE if the
form element does
not match the one in
the parameter.
Returns FALSE if the
form element does
not match the regular
expression.
Returns FALSE if the
form element does
not differ from the
one in the parameter.
Returns FALSE if the
form element is not
unique to the table
and field name in the
parameter. Note:
This rule requires
Query Builder to be
enabled in order to
work.
Returns FALSE if the
form element is
shorter than the
parameter value.
Returns FALSE if the
form element is
longer than the
parameter value.
Returns FALSE if the
form element is not
exactly the
parameter value.
Returns FALSE if the
form element is less
than or equal to the
parameter value or
not numeric.
Returns FALSE if the
form element is less
than the parameter
value, or not
numeric.
matches[form_item]
regex_match[/regex/]
differs[form_item]
is_unique[table.field]
min_length[3]
max_length[12]
exact_length[8]
greater_than[8]
greater_than_equal_to[8]
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