Re: help with preg_replace

From	bill <william@TechServSys.com>
Newsgroups	comp.lang.php
Subject	Re: help with preg_replace
Date	2017-04-14 11:12 -0400
Organization	Aioe.org NNTP Server
Message-ID	<ocqott$ipt$1@gioia.aioe.org> (permalink)
References	<ocnp48$1oei$1@gioia.aioe.org> <ocnpk2$vb5$1@softins.softins.co.uk>

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On 4/13/2017 8:06 AM, Tony Mountifield wrote:
> In article <ocnp48$1oei$1@gioia.aioe.org>,
> bill  <william@TechServSys.com> wrote:
>> I am trying to strip all non-numeric characters from a string.
>> This is my best guess, but it doesn't do anything to the input
>> string.
>>
>> $number =preg_replace("[^0-9]","",$phone);
>>
>> when $phone is '1a2bc34567890'
>>
>
> The pattern string needs to include delimiters within the string,
> so in your case, something like "/[^0-9]/".
>
> You can also use the specifier \D to mean non-digit:
>
> $phone = '1a2bc34567890';
> $number = preg_replace("/\D/","",$phone);
> echo "$phone => $number";
>
> Produces:
> 1a2bc34567890 => 1234567890
>
> Cheers
> Tony
>

Cheers indeed.  Thank you for the explanation.
-bill

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Thread

help with preg_replace bill <william@TechServSys.com> - 2017-04-13 07:57 -0400
  Re: help with preg_replace tony@mountifield.org (Tony Mountifield) - 2017-04-13 12:06 +0000
    Re: help with preg_replace Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-04-13 14:51 +0200
      Re: help with preg_replace bill <william@TechServSys.com> - 2017-04-14 11:13 -0400
    Re: help with preg_replace bill <william@TechServSys.com> - 2017-04-14 11:12 -0400

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