求一正则表达式.高手请进

Question

我想把文章中的
http://img.bbs.163.com:88/auto_aaac/jp/jpeejpee/600x401_111386.jpg
图片地址替换成<a href='http://img.bbs.163.com:88/auto_aaac/jp/jpeejpee/600x401_111386.jpg' target='_blank'>http://img.bbs.163.com:88/auto_aaac/jp/jpeejpee/600x401_111386.jpg</a>HTML代码.请大虾们给点代码吧

Answer 1

$str='sdfsdafhttp://img.bbs.163.com:88/auto_aaac/jp/jpeejpee/600x401_111386.jpgfsfsfs';
echo preg_replace('/(http:\/\/.+?\.(?:jpg|jpeg|gif|png|bmp))/i',"<a href='$1' target='_blank'>$1</a>",$str);