Greedy expression in the regular expression. Solution-php Tutorial

Greedy expression in the regular expression .. PHPcode $ a & lt; B & gt; aaa & lt; B & gt; bbb & lt; B & gt; ccc & lt; B & gt; $ pattern1 & lt; B & gt ;. *? & Lt; B & gt; $ pattern2 ^ & lt; B & gt ;.*? & Lt; B & gt; $; use the greedy expression in the $ p regular expression ..

PHP code

  $ A ='AaaBbbCcc'; $ Pattern1 = '/.*? <\/B>/'; $ pattern2 ='/^.*? <\/B> $ /';

Use $ pattern1 and $ pattern2 to match $ a. The first one can match'Aaa','Bbb','Ccc'These three
However, $ pattern2 can only match the output'AaaBbbCcc', That is .*? The greedy mode of does not work. why ???

Thank you!

------ Solution --------------------
Because you add the ending Character $, it always matches to the end of the string.

Only the first one can be matched even if $ is removed.AaaBecause you have added ^