For a locale-based solution, has anyone tried just using the \w
metachar, as in : `/^\w+$/` ?
According to the php docs:
> A "word" character is any letter or digit or the underscore character,
> that is, any character which can be part of a Perl "word".
> The definition of letters and digits is controlled by PCRE's character tables,
> and may vary if locale-specific matching is taking place.
> For example, in the "fr" (French) locale, some character codes
> greater than 128 are used for accented letters, and these are matched by \w.
Does this work?
On Apr 8, 6:54 am, Max Romantschuk <[EMAIL PROTECTED]> wrote:
> Having run into this issue myself, I created a Latin-9 compatible
> validation function for alphanumeric data. Our system is not using
> Unicode, so you need to be using Latin-9 (ISO-8859-15) for your
> CakePHP installation and database. I assume the approach could be
> adapted to UTF-8 quite easily.
>
> I chose to use a function to generate the characters I need for the
> regexp, as keeping the actual code ASCII makes it immune to encoding
> issues. I decided to keep my "magic string" as a global constant, but
> encapsulating it into the validation function would work as well.
>
> === Put in bootstrap.php -- STARTS ===
>
> // Special non-ascii characters for encoding-proof usage.
> global $LATIN_9_EXTCHARS;
> $LATIN_9_EXTCHARS = array(
> 166, // S with caron (hachek)
> 168, // s with caron (hachek)
> 180, // Z with caron (hachek)
> 184, // z with caron (hachek)
> 188, // Capital ligature OE
> 189, // Small ligature oe
> 190, // Y with diaeresis
> 192, // A Grave
> 193, // A Acute
> 194, // A Circumflex
> 195, // A Tilde
> 196, // A Diaeresis
> 197, // A Ring
> 198, // AE Digraph
> 199, // C Cedilla
> 200, // E Grave
> 201, // E Acute
> 202, // E Circumflex
> 203, // E Diaeresis
> 204, // I Grave
> 205, // I Acute
> 206, // I Circumflex
> 207, // I Diaeresis
> 208, // Uppercase Eth
> 209, // N Tilde
> 210, // O Grave
> 211, // O Acute
> 212, // O Circumflex
> 213, // O Tilde
> 214, // O Diaeresis
> 216, // O Slash
> 217, // U Grave
> 218, // U Acute
> 219, // U Circumflex
> 220, // U Diaeresis
> 221, // Y Acute
> 222, // Uppercase Thorn
> 223, // German Double s
> 224, // a Grave
> 225, // a Acute
> 226, // a Circumflex
> 227, // a Tilde
> 228, // a Diaeresis
> 229, // a Ring
> 230, // ae Digraph
> 231, // c Cedilla
> 232, // e Grave
> 233, // e Acute
> 234, // e Circumflex
> 235, // e Diaeresis
> 236, // i Grave
> 237, // i Acute
> 238, // i Circumflex
> 239, // i Diaeresis
> 240, // Lowercase Eth
> 241, // n Tilde
> 242, // o Grave
> 243, // o Acute
> 244, // o Circumflex
> 245, // o Tilde
> 246, // o Diaeresis
> 248, // o Slash
> 249, // u Grave
> 250, // u Acute
> 251, // u Circumflex
> 252, // u Diaeresis
> 253, // y Acute
> 254, // Lowercase Thorn
> 255, // y Diaeresis
> );
>
> // Function to turn array above into a string.
> function _charcodes_to_string($codes) {
> $output = '';
> foreach($codes as $code) {
> $output .= chr($code);
> }
> return $output;
>
> }
>
> // Special chars character string for validation regexps.
> global $LATIN_9_EXTCHARS_STRING;
> $LATIN_9_EXTCHARS_STRING = _charcodes_to_string($LATIN_9_EXTCHARS);
>
> === Put in bootstrap.php -- ENDS ===
>
> Then the actual validation function:
>
> === Put in app_model.php -- STARTS ===
>
> /**
> * Validator function for alphanumeric values with chars
> * from the Latin-9 charset.
> *
> * @param array $data The data containing the field to be validated
> as passed by the framework.
> * @param boolean $digits Allow digits, true or false.
> * @param boolean $spaces Allow spaces, true or false.
> * @return boolean true if field validates, false if not.
> */
> function latin9AlphaNumeric($data, $digits, $spaces) {
>
> // $data should contain a single element, the field being
> validated.
> $target = array_pop($data);
>
> // Compile the regexp.
> $regex = '/[^A-Z' . $GLOBALS['LATIN_9_EXTCHARS_STRING'];
> if ($digits === true) $regex .= '\\d';
> if ($spaces === true) $regex .= ' ';
> $regex .= ']/i';
>
> // If preg_match returns 0 no offending chars were found, return
> true.
> // In any other case return false.
> return preg_match($regex, $target) == 0 ? true : false;
>
> }
>
> === Put in app_model.php -- ENDS ===
>
> The validation function has parameters to allow/disallow digits and/or
> spaces. I created wrappers (like latin9Alpha(), latin9AlphaNumeric()
> etc.) for it to use in my validation definitions without extra
> arguments, but it could be called straight as-is as well. Then you
> just need to call it with both flags (digits, spaces) defined.
> Otherwise CakePHP will pass some extra data as the second argument,
> messing up the true/false evaluation for the flags. Refer to custom
> validation functions with arguments in the 1.2 docs for details.
>
> Hopefully this is useful to someone else out there! :)
>
> Regards,
> Max Romantschukhttp://max.romantschuk.fi/
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