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Re: [PHP] Replacing 2 strings

Posted by W Luke on 06/01/05 15:20

On 31/05/05, W Luke <wtluke@gmail.com> wrote:
> On 31/05/05, Murray @ PlanetThoughtful <lists@planetthoughtful.org> wrote:
> > > <?
> > >
> > > function replace($string){
> > > preg_match("/^<\^([a-zA-Z]+?)_([a-zA-Z]+?)>/", $string, $matcharr);
> > > $string = str_replace($matcharr[0], $matcharr[1] . " " .$matcharr[2]
> > > . ":", $string);
> > > return $string;
> > >
> > > }
> > >
> > > $string = "<^JIM_JONES> Leicester, 1720. Oxford, 1800 CONFIRMED: meeting
> > > at
> > > 19.10";
> > > echo replace($string);
> > >
> > > ?>
> > >
> > > One of the small benefits of this solution is that Will doesn't need to
> > > know
> > > what is contained in the target substring beforehand.
> >
> > I should get into the habit of listing the assumptions my code makes.
> >
> > In the above example, the following assumptions are present:
> >
> > - The target substring (in this example, "<^JIM_JONES>") must *always*
> > appear at the beginning of the string for the function to perform its task
> >
> > - The target substring will *always* begin with "<^", will feature a "_"
> > between the two name elements, and will conclude with ">"
> >
> > - There will only be two name elements within the target substring (ie will
> > match "<^JIM_JONES>" and "<^MARY_BETH>" but will not match "<^JIM>" or
> > "<^MARY_BETH_JONES>")
> >
> > - The function will only replace the first incidence of the target
> > substring. In the eventuality that the target substring value appears
> > multiple times in the string being processed, all other instances will be
> > left unchanged.
> >
> > - All other contents of the string being processed can vary without impact
> > on the function.
>
> Thanks Murray, and Brian - both excellent and I'm really grateful for
> the help! Clueless when it comes to these types of problems, so
> thanks very much,

One more question, then I'll leave you alone - promise! How simple
would it be to split the two names into 2 vars ($n1 $n2)?
--
Will The Corridor of Uncertainty http://www.cricket.mailliw.com/
- Sanity is a madness put to good use -

 

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