codeigniter_tutorial
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CodeIgniter<br />
is_natural<br />
is_natural_no_zero<br />
valid_url<br />
valid_email<br />
valid_emails<br />
valid_ip<br />
valid_base64<br />
No<br />
No<br />
No<br />
No<br />
No<br />
No<br />
No<br />
Returns FALSE if the<br />
form element<br />
contains anything<br />
other than a natural<br />
number: 0, 1, 2, 3,<br />
etc.<br />
Returns FALSE if the<br />
form element<br />
contains anything<br />
other than a natural<br />
number, but not<br />
zero: 1, 2, 3, etc.<br />
Returns FALSE if the<br />
form element does<br />
not contain a valid<br />
URL.<br />
Returns FALSE if the<br />
form element does<br />
not contain a valid<br />
email address.<br />
Returns FALSE if any<br />
value provided in a<br />
comma-separated list<br />
is not a valid email.<br />
Returns FALSE if the<br />
supplied IP is not<br />
valid. Accepts an<br />
optional parameter of<br />
‘ipv4’ or ‘ipv6’ to<br />
specify an IP format.<br />
Returns FALSE if the<br />
supplied string<br />
contains anything<br />
other than valid<br />
Base64 characters.<br />
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