PHP preg_replace

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

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);

Question by:SheppardDigital
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LVL 31

Expert Comment

by:Marco Gasi
ID: 34144520
Try this:

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

LVL 14

Expert Comment

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! :-(
LVL 13

Accepted Solution

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

Expert Comment

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

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