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This rule checks for valid URL formats. Supports http(s), ftp(s), file, news, and gopher protocols.

var $validate = array(
    'website' => array(
        'rule' => 'url'
    )
);

1. var $validate = array(
2. 'website' => array(
3. 'rule' => 'url'
4. )
5. );

To ensure that a protocol is in the url, strict mode can be enabled like so.

var $validate = array(
    'website' => array(
        'rule' => array('url', true)
    )
);

1. var $validate = array(
2. 'website' => array(
3. 'rule' => array('url', true)
4. )
5. );