Returning specified substring inside a string.

[g_pmattoo]

I have to write a PHP function that will take a string and a substring. The string is an xml like structure and i have to return the text that goes inside the xml element say <x> blah! </x>.
for example- if the string is <x>Hey!</x> <y>test </y> <z> Yup! </z> and the substring is x, then the function should return Hey!

Second thing is there could be multiple occurance of the same element. For example- <x>Hey!</x> <y>test </y> <z> Yup! </z> <x> second time! </x>, in that case the output should be the last text within the substring element i.e. second time! in the above example.

Any input will be highly appreciated.

[dagon]

take a look at the regular expressions section of the manual

http://nz.php.net/manual/en/ref.pcre.php

[laserlight]

Actually, if this is really XML, why not use an XML parser extension, e.g., SimpleXML?