[] Php regular expression to replace the music address and image address

Optional & nbsp; [online, etc.] use php regular expressions to replace the music address and image address
Ask you to replace the music address and image address with regular expressions in php.

Such as music address http://sdsds.com/sdds/def/das.mp3
Http://sdse22s.com/s22dds/d2ef/da333s.wma
Http: // sdsds. c55om/sdd44s/de33f/d2222s.wav

For example, image address http://gggfefgg.com/da3s/ddderv.jpg
Http://saeggg.com/d3as/dddswe.gif
Http://ggbgg.com/da2s/dd86.png

Now I read a piece of content from the database. how can I match these images with music and replace them with others?

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PHP code

[User: root Time: 09: 37: 50 Path:/home/liangdong/php] $ php preg. php this is the image [User: root Time: 09: 37: 51 Path:/home/liangdong/php] $ cat preg. php