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PHP preg_replace

Posted on 2010-11-16
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Last Modified: 2012-05-10
Hi,

I currently have this line of code which cleans a string. Could someone tell me how I would change this to allow the minus sign (-)?

$string = preg_replace("/[^a-zA-Z0-9s]/", "", $string);

Thanks
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Question by:SheppardDigital
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5 Comments
 
LVL 31

Expert Comment

by:Marco Gasi
ID: 34144520
Try this:

$string = preg_replace("/[^a-zA-Z0-9s][^-]/", "", $string);

Cheers
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LVL 14

Expert Comment

by:sam2912
ID: 34144529

$string = preg_replace("/[^a-zA-Z0-9s\-]/", "", $string);

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LVL 31

Expert Comment

by:Marco Gasi
ID: 34144544
Ooops, I was confused! :-(
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LVL 13

Accepted Solution

by:
dsmile earned 500 total points
ID: 34144605
I think there's no needs to escape - in that expression.

$string = preg_replace("/[^a-zA-Z0-9s-]/", "", $string);

is enough.


@SheppardDigital: here's a nice tutorrial about regular expression which might help you in the future http://articles.sitepoint.com/article/regular-expressions-php
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Expert Comment

by:david_coleman_007
ID: 34144621
$string = preg_replace("/[^a-zA-Z0-9s\-]/", "", $string);

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