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Re: regex help [message #176241 is a reply to message #176237]

Fri, 09 December 2011 13:16

Kim Andr Aker
Messages: 17
Registered: September 2010

Karma:

Junior Member

På Fri, 09 Dec 2011 04:51:56 +0100, skrev Jerry Stuckle
<jstucklex(at)attglobal(dot)net>:

> OK, guys, I'll be the first to admit my regex knowledge is more than
> limited. And I've never used ereg().
>
> So, I need to convert the following ereg() call in some code I'm
> modifying to a preg() call. Can someone please tell me what the ereg()
> does and the equivalent preg()?
>
> if (ereg("(error</b>:)(.+)(<br)", $buffer, $regs))

ereg() will return the length of the first matched string, if any, or
FALSE if nothing was found. The "if" surrounding it basically is triggered
if the return value is non-false.
On the other hand,preg_match() will return the number of matches (0 or 1,
since it stops after the first match).

Even though they're pretty close, preg_* follows Perl-based regexes, and
as you pointed out earlier, ereg* uses POSIX regexes. Then again, the
regex in your code line above is simple enough to be converted almost
verbatim to preg_* functions, with the addition of a separator and
escaping said separator inside the regex (the forward slash being the most
commonly used):

if (preg_match("/(error<\/b>\:)(.+)(<br)/", $buffer, $regs) == 1)

--
Kim André Akerø
- kimandre(at)NOSPAMbetadome(dot)com
(remove NOSPAM to contact me directly)

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[Message index]

		regex help By: Jerry Stuckle on Fri, 09 December 2011 03:51
		Re: regex help By: Denis McMahon on Fri, 09 December 2011 11:55
		Re: regex help By: Jerry Stuckle on Fri, 09 December 2011 12:32
		Re: regex help By: Jerry Stuckle on Fri, 09 December 2011 12:51
		Re: regex help By: Kim Andr Aker on Fri, 09 December 2011 13:16
		Re: regex help By: Jerry Stuckle on Sat, 10 December 2011 02:51
		Re: regex help By: Curtis Dyer on Sat, 10 December 2011 04:25
		Re: regex help By: Denis McMahon on Sat, 10 December 2011 10:01

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