Jethro commented on a Page, Ask.com  -  Nov 04, 2011

You can use the look-behind or look-ahead assertions to demand a targeted match to be met (you may want to read up on those assertions to gain understanding of how they work) , while the

(?U)

,

(.+?)

and

/U

are telling regex to match as few strings as possible, being less greedy. Regex by design is greedy and case-sensitive.

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