Robert, Thank you for replying.
Check out the greediness modifier. Greediness determines whether it extends the matching to the largest possible match or the smallest possible match. By default regexes are greedy.
By "greediness modifier", do you mean the preg_set_match, the preg_set_order, and preg_pattern_order arguments?
The documentation on the PHP site does mention the term "greedy", but to me it's not very clear about explaining which modifiers are responsible for which behaviour.
I've experimented with each, and to me it seems like they all behave the same, so perhaps "greediness" is determined by some other modifier?
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