Beauford wrote:
>
...
>>> function invalidchar($strvalue)
>>> {
>>> if(!ereg("^[[:alpha:][:space:]\'-.]*$", $strvalue)) {
>> That regexp matches if $strvalue consists of zero or more
>> ocurrences of a letter, a whitespace character, and any
>> character whose numeric value lies between the numeric values
>> of "'" and "." in your locale.
>> Zero or more means it also matches an empty string.
>>
>>
..
>
> Further to my previous email, there is something weird going on here. I just
> tried using this:
>
> if (!ereg('^[A-Za-z0-9]', $strvalue)) {
> return "error";
> }
stop using bleeding ereg*() function - move to preg_*() funcs like the rest of
the world did 5+ years ago.
>
> When I enter the word Test, which is valid, I am still getting an error
'Test' is not valid according to the regexp your using.
<?php
$strs = array("Test", "Jochem", "@##^%", "", "Test1", "Test!", "J*nk");
// match a non-empty string containing *only* alpha numeric chars
foreach ($strs as $s) {
if (!preg_match("#^[A-Z0-9]+\$#i", $s)) {
echo "error in string: \"$s\" \n";
} else {
echo "no problemo: \"$s\" \n";
}
}
?>
(ps the above is a crappy regexp for real world use imho, but it serves
the purpose of example)
you need to read up and do lots of practicing with regexps - we do realise that
regexps are not easy, unfortunately there is no shortcut to learning how to use them.
I doubt many on this list could be considered expert in the field of regexps, but
you have to get yourself a basic grasp or these things will bite you in the ass until
the cows come home.
start here:
http://php.net/pcre
http://php.net/manual/en/reference.pcre.pattern.modifiers.php
http://php.net/manual/en/reference.pcre.pattern.syntax.php
> returned - but only on this one page. So there has got to be something on
> this page that is screwing this up, but what. I have been over and over this
> and can't see a problem.
>
> I could really use another pair of eyes on this as it is driving me nuts. I
regexps drives everyone nuts to start with. first there is only the mountain, then the
mountain is not a mountain, finally there is just mountain.
> am now into hour 6 with this. Absolutely ridiculous.
thats nothing. most people take months to get anywhere useful with regexps,
well okay I'm speaking for myself - I was in your position somewhere back in 2001,
I was regularly sweating it for weeks trying to understand and getting certain regexps
work 'properly'.
don't give up.
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