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Re: help with preg_replace

From tony@mountifield.org (Tony Mountifield)
Newsgroups comp.lang.php
Subject Re: help with preg_replace
Date 2017-04-13 12:06 +0000
Organization Software Insight Ltd., Winchester, UK
Message-ID <ocnpk2$vb5$1@softins.softins.co.uk> (permalink)
References <ocnp48$1oei$1@gioia.aioe.org>

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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

-- 
Tony Mountifield
Work: tony@softins.co.uk - http://www.softins.co.uk
Play: tony@mountifield.org - http://tony.mountifield.org

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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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