preg_match Error

[CaptainC]

I have an error with this statement:

[code]preg_match("[0-9]+\.?[0-9]*", $text_string, $match_array);[/code]
[!--quoteo--][div class=\'quotetop\']QUOTE[/div][div class=\'quotemain\'][!--quotec--]Warning: preg_match(): Unknown modifier '+' in ...[/quote]
I thought it had something to do with the slashed in php strings, but I have not been able to get it right.

Any thoughts?

[shoz]

You forgot to add delimiters to the regex.
[code]
preg_match("/[0-9]+\.?[0-9]*/", $text_string, $match_array);
[/code]
This question is also more appropriate for the PHP-Help forum and will be moved. Always look for the most appropriate forum for your question before posting.

[CaptainC]

Would this regex be the way to go if I wanted to pull out the number value from this example?:

<b><i>$456.50</i></b>

And have preg_match pull out "456.50" ?

[shoz]

[quote]
Would this regex be the way to go if I wanted to pull out the number value from this example?:

<b><i>$456.50</i></b>

And have preg_match pull out "456.50" ?
[/quote]
If the string will only contain one number then it should be fine. The regex will match a number that ends with a "." however, which may not be what you want. You could change it to the following to avoid that.
[code]
/[0-9]+(.[0-9]+)?/
[/code]

[wickning1]

You can use this:

[code]preg_match('/\d*(\.\d+)?/', $text_string, $match_array);
$number = $match_array[0];[/code]
That will match '0.1', '3', and '.1'.