BBCode Issue

[RobertP]

why is this not working?

http://gskinner.com/RegExr/?31a9l

 

preg_replace(): Unknown modifier 'b'

 

<?php

$string = 'This is a [b]simple BBCode[/b] test.
This is another test [b]line[/b].
[b]tt[/b]';
$string = preg_replace('/\[b](.*)\[/b]/gi','<span style="font-size:bold;">$1</span>',$string);
echo str_replace("\n",'<br />',$string);

?>

[JAY6390]

change

[/b]

to

[\/b]

[xyph]

A 'better' solution would be to use a different delimiter. Escaping delimiters within the expression when you don't have to just adds complexity.

 

http://php.net/manual/en/regexp.reference.delimiters.php

 

'~\[b](.*)\[/b]~gi'

[RobertP]

A 'better' solution would be to use a different delimiter. Escaping delimiters within the expression when you don't have to just adds complexity.

 

http://php.net/manual/en/regexp.reference.delimiters.php

 

'~\[b](.*)\[/b]~gi'

 

 

Amazing resource, thank you very much!

[xyph]

Yeah... the manual does kinda rock.

[RobertP]

so, is it possible to make this expression any simpler?

 

/\[b\](.*?)\[\/b\]/is

 

i tried this, but i want to remove the backward slashes completely if possible.

 

#\[b](.*?)\[/b]#is

[xyph]

No, you will always have to escape the [. It's a special character within RegEx. You could make it it's own character class, but that will actually add complexity and slow down the RegEx

 

[[]b](.*?)[[]/b]

 

You could use a non-special character enclosure for your BBCode...

 

{b}(.*?){/b}

 

... but that would change the behaviour of the application entirely.

[RobertP]

Thank you very much. i think i am going to update my parser to use this method. much easier on the eyes after a few hours :S

 

#\[b](.*?)\[/b]#is