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Posted by Mike P2 on 05/01/07 20:13
On May 1, 6:54 am, Toby A Inkster <usenet200...@tobyinkster.co.uk>
wrote:
> Mike P2 wrote:
> > I assumed that if it were wrapped in an anchor tag there would be no
> > whitespace on the inside of the anchor tag. It won't replace the
> > following:
>
> > <a href="...">my car</a>
>
> > unless he takes out the character groups
>
> However, yours will replace:
>
> <a href="...">my car is very fuel-efficient</a>
Actually, it will not. '>' is not an accepted character in either
character group.
BTW, as I mentioned before, my idea assumes there will be no
whitespace on the ends of the content of the link if there is one
already. That can be fixed like this:
<?php
$search = 'my car';
$link = '...';
$string = 'my car is very fuel-efficient';
$string = str_ireplace( $search, " $search ", $string );
$string = preg_replace( '#(<a[^>]+>)(\s+)#i', '$2$1', " $string" );
$string = preg_replace( '#(\s+)</a>#i', '</a>$1', $string );
$string = preg_replace( "#([\s\(])$search([\s\)\.])#i", "$1<a
href='$link'>$search</a>$2", $string );
echo $string;
?>
What I thought of is to add those two extra preg_replace()s before the
main one that moves whitespace on edges from inside to outside of
anchor tags. The middle preg_replace() may be optional, since the last
one will not work if the words are butted up against the open tag
anyway. Finally, I just added that str_ireplace() so it can even
replace the keywords when next to or inside of some other tag. If you
think this is too slow, consider taking out case insensitivity or the
middle preg_replace() (or the first one maybe).
-Mike PII
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