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Regular Expressions [message #174032]

Fri, 20 May 2011 00:03

bruceaj
Messages: 30
Registered: September 2010

Karma: 0

Member

I have the need for a regular expression. I haven't written one for
more then 20 years, and even then I wasn't good!!

I have a string, $parmStr, that contains a mixture of characters and
digits (0-9). I want to extract all none digits and return a string
with ONLY the digits.

Greatly appreciate it someone could show me what I am looking for.

Thank you very much

Bruce

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Re: Regular Expressions [message #174034 is a reply to message #174032]

Fri, 20 May 2011 00:51

Jeff North
Messages: 58
Registered: November 2010

Karma: 0

Member

On Thu, 19 May 2011 17:03:27 -0700 (PDT), in comp.lang.php bruceaj
<bruceaj(at)bellsouth(dot)net>
<900016fb-6002-465a-a332-3ef40519371a(at)e21g2000yqe(dot)googlegroups(dot)com>
wrote:

> | I have the need for a regular expression. I haven't written one for
> | more then 20 years, and even then I wasn't good!!
> |
> | I have a string, $parmStr, that contains a mixture of characters and
> | digits (0-9). I want to extract all none digits and return a string
> | with ONLY the digits.
> |
> | Greatly appreciate it someone could show me what I am looking for.
> |
> | Thank you very much
> |
> | Bruce

A starting point would be:
/[0-9]/

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Re: Regular Expressions [message #174038 is a reply to message #174034]

Fri, 20 May 2011 01:48

bruceaj
Messages: 30
Registered: September 2010

Karma: 0

Member

On May 19, 8:51 pm, Jeff North <jnort...@yahoo.com.au> wrote:
> On Thu, 19 May 2011 17:03:27 -0700 (PDT), in comp.lang.php bruceaj
> <bruc...@bellsouth.net>
> <900016fb-6002-465a-a332-3ef405193...@e21g2000yqe.googlegroups.com>
> wrote:
>
>> | I have the need for a regular expression. I haven't written one for
>> | more then 20 years, and even then I wasn't good!!
>> |
>> | I have a string, $parmStr, that contains a mixture of characters and
>> | digits (0-9). I want to extract all none digits and return a string
>> | with ONLY the digits.
>> |
>> | Greatly appreciate it someone could show me what I am looking for.
>> |
>> | Thank you very much
>> |
>> | Bruce
>
> A starting point would be:
> /[0-9]/

Works like a champ!!!

Thanks.....

Bruce

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Re: Regular Expressions [message #174040 is a reply to message #174034]

Fri, 20 May 2011 02:08

Daniel Peraza
Messages: 6
Registered: September 2010

Karma: 0

Junior Member

On May 19, 8:51 pm, Jeff North <jnort...@yahoo.com.au> wrote:
> On Thu, 19 May 2011 17:03:27 -0700 (PDT), in comp.lang.php bruceaj
> <bruc...@bellsouth.net>
> <900016fb-6002-465a-a332-3ef405193...@e21g2000yqe.googlegroups.com>
> wrote:
>
>> | I have the need for a regular expression. I haven't written one for
>> | more then 20 years, and even then I wasn't good!!
>> |
>> | I have a string, $parmStr, that contains a mixture of characters and
>> | digits (0-9). I want to extract all none digits and return a string
>> | with ONLY the digits.
>> |
>> | Greatly appreciate it someone could show me what I am looking for.
>> |
>> | Thank you very much
>> |
>> | Bruce
>

You may also use filter_var:

<?php
$str = "some_characters_and_number_13453432";
echo filter_var($str, FILTER_SANITIZE_NUMBER_INT); // echoes 13453432
?>

Use what you like most.

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Re: Regular Expressions [message #174045 is a reply to message #174032]

Fri, 20 May 2011 07:47

alvaro.NOSPAMTHANX
Messages: 277
Registered: September 2010

Karma: 0

Senior Member

El 20/05/2011 2:03, bruceaj escribió/wrote:
> I have the need for a regular expression. I haven't written one for
> more then 20 years, and even then I wasn't good!!
>
> I have a string, $parmStr, that contains a mixture of characters and
> digits (0-9). I want to extract all none digits and return a string
> with ONLY the digits.
>
> Greatly appreciate it someone could show me what I am looking for.

Untested:

preg_replace('/[^\d]+/', '', $parmStr);

--
-- http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
-- Mi sitio sobre programación web: http://borrame.com
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