* Peter Brodersen <[EMAIL PROTECTED]>: > On 10 Aug 2004 16:53:59 -0000, in php.general you wrote: > > > Yes. preg_replace is greedy by default. > > Err, global, that is (although it's also greedy per default, but then > again, that's also the case for ereg-functions and perl)
Umm, not in perl. Perl will only replace the *first* match, unless the g switch is passed to the s/// construct (e.g., s/a/b/g will replace all occurrences of a with b; s/a/b/ will only replace the first). In other words, perl's substitution operator is not *global* by default; PHP's preg_replace is, however. And regexps are only *greedy* when using wildcards for quantifiers, not by default (e.g., s/a/b/ only replaces a single occurence of a; s/a*/b/ will replace an 0 or more occurences of a followed by anything with b -- aaaab -> bb, as does ab -> bb). In other words, regexps are not *greedy* by default, either. > "greedy" is the term of whether or not a range of matches should be > expanded to as long as possible, e.g.: Good point; I was a bit hasty in my terminology. I should have said '*global* by default'. -- Matthew Weier O'Phinney | WEBSITES: Webmaster and IT Specialist | http://www.garden.org National Gardening Association | http://www.kidsgardening.com 802-863-5251 x156 | http://nationalgardenmonth.org mailto:[EMAIL PROTECTED] | http://vermontbotanical.org -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
