Posted by Pedro Graca on 10/11/06 14:17

Mark Woodward wrote:
> I'm trying to validate text in a HTML input field.
> How do I *allow* a single quote?

The following code works for me


<?php
// catch any nasty characters (eg !@#$%^&*()/\)
$match = '/^[\'\w\._?!, -]+$/';

$res = 'word';
echo 'Search: "', $res, '" is ', (preg_match($match, $res))?('valid'):('not valid'), "\n";

$res = 'two words';
echo 'Search: "', $res, '" is ', (preg_match($match, $res))?('valid'):('not valid'), "\n";

$res = 'pseudo-word';
echo 'Search: "', $res, '" is ', (preg_match($match, $res))?('valid'):('not valid'), "\n";

$res = 'Mc\'Donalds';
echo 'Search: "', $res, '" is ', (preg_match($match, $res))?('valid'):('not valid'), "\n";

$res = 'under_score';
echo 'Search: "', $res, '" is ', (preg_match($match, $res))?('valid'):('not valid'), "\n";

$res = 'Question? Answer!';
echo 'Search: "', $res, '" is ', (preg_match($match, $res))?('valid'):('not valid'), "\n";

$res = "embedded\ttab";
echo 'Search: "', $res, '" is ', (preg_match($match, $res))?('valid'):('not valid'), "\n";
?>

> // catch any nasty characters (eg !@#$%^&*()/\)
> $match = '/^['\w\.\-_?!, ]+$/';
// * 1 22

*1 the single quote here is invalid; you need to escape it
*2 I'm not sure an escaped "-" works. What I do when I want a "-" in
a regular expression inside a class definition is to put it at the
end

--
File not found: (R)esume, (R)etry, (R)erun, (R)eturn, (R)eboot

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