On Wed, 2006-05-17 at 16:38, Robin Vickery wrote:
> On 17/05/06, René Fournier <m5@xxxxxxxxxxxxxxxx> wrote:
> > Looking for suggestions on the most compute-efficient way to search
> > variable-length strings (~200 characters) for the occurrence of one
> > of about 100 possible needles. In other words:
>
> >
> >
> >
> > $needles = array ( 1 => "Hello Jim" , 2 => "Yellow Banana" , 3 =>
> > "Red Car", ... etc .... (100 elements)
> >
> > $haystack = "Once upon a time there was a programming language that
> > everyone loved. Its name was PHP, and the people that worked with it
> > also liked Yellow Bananas. One day...";
> >
>
> What version of php?
>
> If you're using php5 then you could do:
>
> <?php
> $count = 0;
> str_replace($needles, '', $haystack, $count);
> if ($count) { /* there was a match */ }
> ?>
Surely you meant strpos( $haystack, $needle ) ???
Incidentally do you need to match on words beginnings or endings? For
instance should 'put' match all of the following:
I put the apple core in the compost.
Someone always puts the fire out.
The car sputtered and died.
Cheers,
Rob.
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