* Thus wrote Michael Spector:
>
> Hi,
>
> This script:
>
> <?
> $line = "Use operator m// for matching strings";
> $pattern = "m//";
>
> if(preg_match("/$pattern/", $line, $match)) {
> print $match[0]."\n";
> }
> ?>
>
> outputs the following error:
>
> <br />
> <b>Warning</b>: Unknown modifier '/' in <b>/home/michael/bug.php</b> on
> line <b>5</b><br />
>
>
> I thought it should find the match "m//" ...
>
> Can you say, why search of the ending delimiter in a pattern cannot
> be performed in a simple way, as you can see in the attached patch ?
Because of side effects like this:
$pattern = "Foo//i";
if(preg_match("/$pattern", $line, $match)) {
With your patch the preg_match has silently turned into a
caseINsensitve search.
Just use preg_quote($pattern, '/');
Curt
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