Answer by bobince for Documentation for ?: in regex?
PHP's preg_match_all uses the PCRE (Perl-Compatible Regular Expression) syntax, which is documented here. Non-capturing subpatterns are documented in the Subpatterns chapter.would leave me to believe...
View ArticleAnswer by Alex Pliutau for Documentation for ?: in regex?
I don't know how do this with ?:, but it is easy with simple loop:$regex = '/b(ig|all)/';$array = array( 0 => array(0 => 'big', 1 => 'ball'), 1 => array(0 => 'ig', 1 =>...
View ArticleAnswer by poke for Documentation for ?: in regex?
It's in the php manual, and I believe any other near-complete regular expression section for any language…The fact that plain parentheses fulfill two functions is not always helpful. There are often...
View ArticleAnswer by Ruel for Documentation for ?: in regex?
Here's what I've found:If you do not use the backreference, you can optimize this regular expression into Set(?:Value)?. The question mark and the colon after the opening round bracket are the special...
View ArticleAnswer by ircmaxell for Documentation for ?: in regex?
It's available on the Subpatterns page of the official documentation.The fact that plain parentheses fulfill two functions is not always helpful. There are often times when a grouping subpattern is...
View ArticleAnswer by Julien Hoarau for Documentation for ?: in regex?
(?:) as a whole represents a non-capturing group. Regular-expressions.info mentions this syntax :The question mark and the colon after the opening round bracket are the special syntax that you can use...
View ArticleDocumentation for ?: in regex?
A while ago, I saw in regex (at least in PHP) you can make a capturing group not capture by prepending ?:.Example$str = 'big blue ball';$regex = '/b(ig|all)/';preg_match_all($regex, $str,...
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