[RESOLVED] PHP Preg vs Javascript match

[Shawazi]

I have these lines in PHP

if (!preg_match("/^[\w\xC0-\xD6\xD8-\xF6\xF8-\xFF\'’. -]{2,50}$/",$thevalue))
		return "Bad";
	else
		return "Good";

which will return "Bad" for "Jørgen Wærner" even though it passes in Javascript with an identical patern. Does anyone know why this would be the case?

[bradgrafelman]

Are you sure? There might be a problem with the way you are retrieving the name or something, because it worked fine for me in both PHP4 and PHP5. Try doing this:

var_dump(preg_match("/^[\w\xC0-\xD6\xD8-\xF6\xF8-\xFF\'’. -]{2,50}$/","Jørgen Wærner"));

You should get "int(1)" - do you? If so, there's a problem with which you're retrieving the name. Try doing a [man]var_dump/man on the name variable and post the output.

[NogDog]

This worked OK for me:

function test($thevalue)
{
  if (!preg_match("/^[\w\xC0-\xD6\xD8-\xF6\xF8-\xFF\'’. -]{2,50}$/",$thevalue))
    return "Bad";
  else
    return "Good";
}
echo test('Jørgen Wærner');  // result: "Good"

[Shawazi]

Making that little test script worked.

function test($thevalue)
{
  if (!preg_match("/^[\w\xC0-\xD6\xD8-\xF6\xF8-\xFF\d&_\.?!@#:;,\/\(\)'’ -]+$/",$thevalue)) 
    return "Bad";
  else
    return "Good";
}
echo test('Jørgen Wærner');  // result: "Good" 

However I put back my function and did this

function checkGeneric($thevalue)
{
	if (!preg_match("/^[\w\xC0-\xD6\xD8-\xF6\xF8-\xFF\d&_\.?!@#:;,\/\(\)'’ -]+$/",$thevalue)) {
		die("Bad match for '$thevalue'"); 
		return "Bad";
	}
	else
		return "Good";
}

which died saying Bad match for 'Jørgen Wærner'
So it clearly got the same value. This causes some confusion here

[bradgrafelman]

Again, can you do a [man]var_dump/man on the value you're passing to this function and paste it for us? Your function worked just fine for me:

function checkGeneric($thevalue)
{
    if (!preg_match("/^[\w\xC0-\xD6\xD8-\xF6\xF8-\xFF\d&_\.?!@#:;,\/\(\)'’ -]+$/",$thevalue)) {
        die("Bad match for '$thevalue'");
        return "Bad";
    }
    else
        return "Good";
}
echo checkGeneric('Jørgen Wærner'); // Good

[Shawazi]

In the nonworking part it printed:

string(15) "Jørgen Wærner" Bad match for 'Jørgen Wærner'

In the working part it printed:

string(13) "J�rgen W�rner" Good

For some reason it didn't process the mb on the function 'test'. Just prints out the funky question marks and counted 13. The function 'checkGeneric' is called using variable functions. I'm unsure if this changes it. There is a loop through an array for each field in a form and the approporiate function to use

if ($checker[$key](stripslashes($_POST[$value])) != "Good") 

basically that sends it to checkGeneric('Jorgen');

[bradgrafelman]

I'm thinking it could be a character encoding issue... though I don't know where to start as I'm not very experienced with such issues.

[Shawazi]

I added \d\pL as suggested here:

http://forums.devshed.com/php-development-5/php-preg-vs-javascript-match-499280.html#post1958496

Although I did not need to add the u modifier. I think that's the first time someone on devshed beat out phpbuilder since I've been on here 😉

[bradgrafelman]

Glad you got it working - don't forget to mark this thread resolved.

Shawazi wrote:

I think that's the first time someone on devshed beat out phpbuilder since I've been on here 😉

To be fair, I'm definitely no guru that should be representative of PHPBuilder! :o

[Shawazi]

Well I can safely say you and nogdog are the best two resources on here ha