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Re: Regular Expression Help [message #179337 is a reply to message #179335]

Mon, 08 October 2012 10:03

Captain Paralytic
Messages: 204
Registered: September 2010

Karma:

Senior Member

On Oct 8, 5:20 am, Scott Johnson <nooneh...@chalupasworld.com> wrote:
> I have two possible values I need to match as the same.
>
> Name/11 (This one is pulled from the source DB)
> Name/11* (This is what I need to match to with or without the (*))
>
> The pattern base name is pulled from a DB so I need to find a way to do
> this pragmatically.
>
> Now some of the names have a forward slash / so I am using hash mark #
> as a delimiter.
Safer than this is to use preg_quote().

>
> I was able to find the "Name/11" using
>
> #^Name/11#
>
> or more specifically;
>
> $value = "Name/11";
> $pattern = "#^" . $value . "#";
>
> But as for the (*), no glory.
> I originally tried
>
> #^Name/11?*#
> #^Name/11\*#
> #^Name/11.*#
The middle one will sepcifically match "Name/11*" but it will not
match "Name/11".
Since ? means "match 0 or 1 occurrences", "Name/11\*?" will match what
you want. However, it will also match "Name/11e". To match precisely
what you have described, you need something like this:
$value = "Name/11\*?";
$match_value1 = "Name/11";
$match_value2 = "Name/11*";
$match_value3 = "Name/11t";
$pattern = "#^$value$#";
echo preg_match($pattern, $match_value1);
echo preg_match($pattern, $match_value2);
echo preg_match($pattern, $match_value3);

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[Message index]

		Regular Expression Help By: Scott Johnson on Mon, 08 October 2012 04:20
		Re: Regular Expression Help By: Captain Paralytic on Mon, 08 October 2012 10:03
		Re: Regular Expression Help By: Denis McMahon on Mon, 08 October 2012 12:49
		Re: Regular Expression Help By: Denis McMahon on Mon, 08 October 2012 12:59
		Re: Regular Expression Help By: BootNic on Mon, 08 October 2012 17:39
		Re: Regular Expression Help By: alvaro.NOSPAMTHANX on Tue, 09 October 2012 10:29
		Re: Regular Expression Help By: Scott Johnson on Wed, 10 October 2012 10:38

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